{\raggedleft{FERMILAB-PUB-05-027-E\\ CDF/PUB/BOTTOM/PUBLIC/7395}\\ %//Draft 2.6 \\ }\vspace*{0.9cm} First Evidence for \phiphi\ Decay and Measurements of Branching Ratio and \ACP\ for \phik
D.~Acosta
We present the first evidence of charmless decays of the $B_s^0$ meson, the decay \phiphi, and a measurement of the Branching Ratio $\BR(\phiphi)$ %We present the first evidence for the decay \phiphi\ and a %measurement of the Branching Ratio $\BR(\phiphi)$ using $180\,{pb}^{-1}$ of data collected by the \cdfii experiment at the Fermilab Tevatron collider. In addition, the BR and direct $CP$~asymmetry for the \phik\ decay are measured. We obtain: $\BR (\phiphi) = (14 \ase{6}{5}(stat.) \pm 6(syst.)) \times 10^{-6}$, $\BR (\phik) = (7.6 \pm 1.3(stat.) \pm 0.6(syst.) ) \times 10^{-6}$, and $\ACP(\phik) = -0.07 \pm 0.17 (stat.) \ase{0.03}{0.02} (syst.)$. Both decays are governed in the Standard Model by second order (penguin) $b \myto s\bar{s}s$ amplitudes.
PHIX_prl.tex
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\newcommand{\ipb}{\ensuremath{\mathrm{pb^{-1}}}}
\newcommand{\ifb}{\ensuremath{\mathrm{fb^{-1}}}}
\newcommand{\TeV}{\ensuremath{\matqq	hrm{Te\kern -0.1em V}}}
\newcommand{\TeVc}{\ensuremath{\mathrm{Te\kern -0.1em V\!/}c}}
\newcommand{\TeVcc}{\ensuremath{\mathrm{Te\kern -0.1em V\!/}c^2}}
\newcommand{\GeV}{\ensuremath{\mathrm{Ge\kern -0.1em V}}}
\newcommand{\GeVc}{\ensuremath{\mathrm{Ge\kern -0.1em V\!/}c}}
\newcommand{\GeVcc}{\ensuremath{\mathrm{Ge\kern -0.1em V\!/}c^2}}
\newcommand{\MeV}{\ensuremath{\mathrm{Me\kern -0.1em V}}}
\newcommand{\MeVc}{\ensuremath{\mathrm{Me\kern -0.1em V\!/}c}}
\newcommand{\MeVcc}{\ensuremath{\mathrm{Me\kern -0.1em V\!/}c^2}}
\newcommand{\Tesla}{\ensuremath{\mathrm{T}}}
\newcommand{\cm}{\ensuremath{\mathrm{cm}}}
\newcommand{\um}{\ensuremath{\mathrm{\mu m}}}
\newcommand{\ps}{\ensuremath{\mathrm{ps}}}
\newcommand{\cdfii}{CDF\,II~}
\newcommand{\ppbar}{p\overline{p}}
\newcommand{\at}{\symbol{64}}
\newcommand{\sye}[1]{\ensuremath{~\pm #1}}
\newcommand{\ase}[2]{\ensuremath{^{~+ #1}_{~- #2}}}
\newcommand{\asi}[2]{\ensuremath{^{~- #1}_{~+ #2}}}

\newcommand{\myto}{\kern -0.3em\to\kern -0.2em}
\newcommand{\Lxy}{L_{\rm xy}}
\newcommand{\BR}{{\mathrm {BR}}}

\newcommand{\phikpm}{\ensuremath{B^{\pm} \myto \phi K^{\pm}}}
\newcommand{\psikpm}{\ensuremath{{B^{\pm} \myto J/\psi K^{\pm}}}}
\newcommand{\phik}{\ensuremath{B^+ \myto \phi K^+}}
\newcommand{\psik}{\ensuremath{{B^+ \myto J/\psi K^+}}}
\newcommand{\phiphi}{\ensuremath{B_s^0 \myto \phi \phi}}
\newcommand{\psiphi}{\ensuremath{B_s^0 \myto J/\psi \phi}}
\newcommand{\psikst}{\ensuremath{B^0 \myto J/\psi K^{\ast 0}}}
\newcommand{\phikst}{\ensuremath{B^0 \myto \phi K^{\ast 0}}}
\newcommand{\kstar}{\ensuremath{K^{\ast 0} }}
\newcommand{\epem}{\ensuremath{e^+e^-}}
\newcommand{\mpmm}{\ensuremath{\mu^+\mu^-}}
\newcommand{\KKpm}{\ensuremath{K^+K^-}}

\newcommand{\ACP}{\ensuremath{A_{CP}}}
\newcommand{\DGs}{\ensuremath{\Delta \Gamma_s}}
\newcommand{\Dms}{\ensuremath{\Delta m_s\ }}
\newcommand{\BVV}{\ensuremath{B\rightarrow VV\ }}
\newcommand{\BsVV}{\ensuremath{B_s^0\rightarrow VV\ }}

\newcommand{\phiKK}{\ensuremath{\phi \myto \KKpm}}
\newcommand{\psimm}{\ensuremath{J/\psi \myto \mpmm}}

%\font\eightit=cmti8                                                                                

%==============================================================================
\begin{document}
%==============================================================================

\title{
{\raggedleft\small
{\tt FERMILAB-PUB-05-027-E\\
CDF/PUB/BOTTOM/PUBLIC/7395}\\
%//Draft 2.6 \\
}\vspace*{0.9cm}
First Evidence for \phiphi\ Decay and Measurements of Branching Ratio and 
\ACP\ for \phik} 

%\input{./auth_Feb_2005_prl.tex}
%%======================================================================
%% Found 625 authors from 60 institutions.
%%
%% In order to force proper institution order, the institutions
%% need to be declared first:
%%======================================================================

\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China }
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439 }
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain }
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy }
\affiliation{Brandeis University, Waltham, Massachusetts 02254 }
\affiliation{University of California at Davis, Davis, California 95616 }
\affiliation{University of California at Los Angeles, Los Angeles, California 90024 }
\affiliation{University of California at San Diego, La Jolla, California 92093 }
\affiliation{University of California at Santa Barbara, Santa Barbara, California 93106 }
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain }
\affiliation{Carnegie Mellon University, Pittsburgh, PA 15213 }
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia }
\affiliation{Duke University, Durham, North Carolina 27708 }
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }
\affiliation{University of Florida, Gainesville, Florida 32611 }
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy }
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland }
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom }
\affiliation{Harvard University, Cambridge, Massachusetts 02138 }
\affiliation{Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00044, Helsinki, Finland }
\affiliation{Hiroshima University, Higashi-Hiroshima 724, Japan }
\affiliation{University of Illinois, Urbana, Illinois 61801 }
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218 }
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }
\affiliation{High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan }
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom }
\affiliation{University College London, London WC1E 6BT, United Kingdom }
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }
\affiliation{Michigan State University, East Lansing, Michigan 48824 }
\affiliation{Institution for Theoretical and Experimental Physics, ITEP, Moscow 117259, Russia }
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131 }
\affiliation{Northwestern University, Evanston, Illinois 60208 }
\affiliation{The Ohio State University, Columbus, Ohio 43210 }
\affiliation{Okayama University, Okayama 700-8530, Japan }
\affiliation{Osaka City University, Osaka 588, Japan }
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom }
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260 }
\affiliation{Purdue University, West Lafayette, Indiana 47907 }
\affiliation{University of Rochester, Rochester, New York 14627 }
\affiliation{The Rockefeller University, New York, New York 10021 }
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Roma ``La Sapienza," I-00185 Roma, Italy }
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }
\affiliation{Texas A\&M University, College Station, Texas 77843 }
\affiliation{Texas Tech University, Lubbock, Texas 79409 }
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy }
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }
\affiliation{Tufts University, Medford, Massachusetts 02155 }
\affiliation{Waseda University, Tokyo 169, Japan }
\affiliation{Wayne State University, Detroit, Michigan 48201 }
\affiliation{University of Wisconsin, Madison, Wisconsin 53706 }
\affiliation{Yale University, New Haven, Connecticut 06520 }


%%======================================================================
%% The list of authors and affilliations in alphabetical order: 
%%======================================================================

\author{D.~Acosta}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{J.~Adelman}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{T.~Affolder}
\affiliation{University of California at Santa Barbara, Santa Barbara, California 93106 }

\author{T.~Akimoto}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{M.G.~Albrow}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{D.~Ambrose}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{S.~Amerio}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{D.~Amidei}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{A.~Anastassov}
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }

\author{K.~Anikeev}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{A.~Annovi}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{J.~Antos}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China }

\author{M.~Aoki}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{G.~Apollinari}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{T.~Arisawa}
\affiliation{Waseda University, Tokyo 169, Japan }

\author{J-F.~Arguin}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{A.~Artikov}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia }

\author{W.~Ashmanskas}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{A.~Attal}
\affiliation{University of California at Los Angeles, Los Angeles, California 90024 }

\author{F.~Azfar}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom }

\author{P.~Azzi-Bacchetta}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{N.~Bacchetta}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{H.~Bachacou}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{W.~Badgett}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{A.~Barbaro-Galtieri}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{G.J.~Barker}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{V.E.~Barnes}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{B.A.~Barnett}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218 }

\author{S.~Baroiant}
\affiliation{University of California at Davis, Davis, California 95616 }

\author{G.~Bauer}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{F.~Bedeschi}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{S.~Behari}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218 }

\author{S.~Belforte}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy }

\author{G.~Bellettini}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{J.~Bellinger}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706 }

\author{A.~Belloni}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{E.~Ben-Haim}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{D.~Benjamin}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{A.~Beretvas}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{A.~Bhatti}
\affiliation{The Rockefeller University, New York, New York 10021 }

\author{M.~Binkley}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{D.~Bisello}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{M.~Bishai}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{R.E.~Blair}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439 }

\author{C.~Blocker}
\affiliation{Brandeis University, Waltham, Massachusetts 02254 }

\author{K.~Bloom}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{B.~Blumenfeld}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218 }

\author{A.~Bocci}
\affiliation{The Rockefeller University, New York, New York 10021 }

\author{A.~Bodek}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{G.~Bolla}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{A.~Bolshov}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{D.~Bortoletto}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{J.~Boudreau}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260 }

\author{S.~Bourov}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{B.~Brau}
\affiliation{University of California at Santa Barbara, Santa Barbara, California 93106 }

\author{C.~Bromberg}
\affiliation{Michigan State University, East Lansing, Michigan 48824 }

\author{E.~Brubaker}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{J.~Budagov}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia }

\author{H.S.~Budd}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{K.~Burkett}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{G.~Busetto}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{P.~Bussey}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom }

\author{K.L.~Byrum}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439 }

\author{S.~Cabrera}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{M.~Campanelli}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland }

\author{M.~Campbell}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{F.~Canelli}
\affiliation{University of California at Los Angeles, Los Angeles, California 90024 }

\author{A.~Canepa}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{M.~Casarsa}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy }

\author{S.~Castellano}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{D.~Carlsmith}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706 }

\author{R.~Carosi}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{S.~Carron}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{M.~Cavalli-Sforza}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain }

\author{A.~Castro}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy }

\author{P.~Catastini}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{D.~Cauz}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy }

\author{A.~Cerri}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{L.~Cerrito}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom }

\author{J.~Chapman}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{Y.C.~Chen}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China }

\author{M.~Chertok}
\affiliation{University of California at Davis, Davis, California 95616 }

\author{G.~Chiarelli}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{G.~Chlachidze}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia }

\author{F.~Chlebana}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{I.~Cho}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{K.~Cho}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{D.~Chokheli}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia }

\author{J.P.~Chou}
\affiliation{Harvard University, Cambridge, Massachusetts 02138 }

\author{S.~Chuang}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706 }

\author{K.~Chung}
\affiliation{Carnegie Mellon University, Pittsburgh, PA 15213 }

\author{W-H.~Chung}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706 }

\author{Y.S.~Chung}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{M.~Cijliak}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{C.I.~Ciobanu}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{M.A.~Ciocci}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{A.G.~Clark}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland }

\author{D.~Clark}
\affiliation{Brandeis University, Waltham, Massachusetts 02254 }

\author{M.~Coca}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{A.~Connolly}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{M.~Convery}
\affiliation{The Rockefeller University, New York, New York 10021 }

\author{J.~Conway}
\affiliation{University of California at Davis, Davis, California 95616 }

\author{B.~Cooper}
\affiliation{University College London, London WC1E 6BT, United Kingdom }

\author{K.~Copic}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{M.~Cordelli}
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy }

\author{G.~Cortiana}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{J.~Cranshaw}
\affiliation{Texas Tech University, Lubbock, Texas 79409 }

\author{J.~Cuevas}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain }

\author{A.~Cruz}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{R.~Culbertson}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{C.~Currat}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{D.~Cyr}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706 }

\author{D.~Dagenhart}
\affiliation{Brandeis University, Waltham, Massachusetts 02254 }

\author{S.~Da~Ronco}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{S.~D'Auria}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom }

\author{P.~de~Barbaro}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{S.~De~Cecco}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{A.~Deisher}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{G.~De~Lentdecker}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{M.~Dell'Orso}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{S.~Demers}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{L.~Demortier}
\affiliation{The Rockefeller University, New York, New York 10021 }

\author{M.~Deninno}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy }

\author{D.~De~Pedis}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{P.F.~Derwent}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{C.~Dionisi}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{J.R.~Dittmann}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{P.~DiTuro}
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }

\author{C.~D\"{o}rr}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{A.~Dominguez}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{S.~Donati}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{M.~Donega}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland }

\author{J.~Donini}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{M.~D'Onofrio}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland }

\author{T.~Dorigo}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{K.~Ebina}
\affiliation{Waseda University, Tokyo 169, Japan }

\author{J.~Efron}
\affiliation{The Ohio State University, Columbus, Ohio 43210 }

\author{J.~Ehlers}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland }

\author{R.~Erbacher}
\affiliation{University of California at Davis, Davis, California 95616 }

\author{M.~Erdmann}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{D.~Errede}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{S.~Errede}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{R.~Eusebi}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{H-C.~Fang}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{S.~Farrington}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom }

\author{I.~Fedorko}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{W.T.~Fedorko}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{R.G.~Feild}
\affiliation{Yale University, New Haven, Connecticut 06520 }

\author{M.~Feindt}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{J.P.~Fernandez}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{R.D.~Field}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{G.~Flanagan}
\affiliation{Michigan State University, East Lansing, Michigan 48824 }

\author{B.~Flaugher}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{L.R.~Flores-Castillo}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260 }

\author{A.~Foland}
\affiliation{Harvard University, Cambridge, Massachusetts 02138 }

\author{S.~Forrester}
\affiliation{University of California at Davis, Davis, California 95616 }

\author{G.W.~Foster}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{M.~Franklin}
\affiliation{Harvard University, Cambridge, Massachusetts 02138 }

\author{J.C.~Freeman}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{Y.~Fujii}
\affiliation{High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan }

\author{I.~Furic}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{A.~Gajjar}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom }

\author{J.~Galyardt}
\affiliation{Carnegie Mellon University, Pittsburgh, PA 15213 }

\author{M.~Gallinaro}
\affiliation{The Rockefeller University, New York, New York 10021 }

\author{M.~Garcia-Sciveres}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{A.F.~Garfinkel}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{C.~Gay}
\affiliation{Yale University, New Haven, Connecticut 06520 }

\author{H.~Gerberich}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{D.W.~Gerdes}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{E.~Gerchtein}
\affiliation{Carnegie Mellon University, Pittsburgh, PA 15213 }

\author{S.~Giagu}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{P.~Giannetti}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{A.~Gibson}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{K.~Gibson}
\affiliation{Carnegie Mellon University, Pittsburgh, PA 15213 }

\author{C.~Ginsburg}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{K.~Giolo}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{M.~Giordani}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy }

\author{M.~Giunta}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{G.~Giurgiu}
\affiliation{Carnegie Mellon University, Pittsburgh, PA 15213 }

\author{V.~Glagolev}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia }

\author{D.~Glenzinski}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{M.~Gold}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131 }

\author{N.~Goldschmidt}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{D.~Goldstein}
\affiliation{University of California at Los Angeles, Los Angeles, California 90024 }

\author{J.~Goldstein}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom }

\author{G.~Gomez}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain }

\author{G.~Gomez-Ceballos}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain }

\author{M.~Goncharov}
\affiliation{Texas A\&M University, College Station, Texas 77843 }

\author{O.~Gonz\'{a}lez}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{I.~Gorelov}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131 }

\author{A.T.~Goshaw}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{Y.~Gotra}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260 }

\author{K.~Goulianos}
\affiliation{The Rockefeller University, New York, New York 10021 }

\author{A.~Gresele}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{M.~Griffiths}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom }

\author{C.~Grosso-Pilcher}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{U.~Grundler}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{J.~Guimaraes~da~Costa}
\affiliation{Harvard University, Cambridge, Massachusetts 02138 }

\author{C.~Haber}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{K.~Hahn}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{S.R.~Hahn}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{E.~Halkiadakis}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{A.~Hamilton}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{B-Y.~Han}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{R.~Handler}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706 }

\author{F.~Happacher}
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy }

\author{K.~Hara}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{M.~Hare}
\affiliation{Tufts University, Medford, Massachusetts 02155 }

\author{R.F.~Harr}
\affiliation{Wayne State University, Detroit, Michigan 48201 }

\author{R.M.~Harris}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{F.~Hartmann}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{K.~Hatakeyama}
\affiliation{The Rockefeller University, New York, New York 10021 }

\author{J.~Hauser}
\affiliation{University of California at Los Angeles, Los Angeles, California 90024 }

\author{C.~Hays}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{H.~Hayward}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom }

\author{B.~Heinemann}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom }

\author{J.~Heinrich}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{M.~Hennecke}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{M.~Herndon}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218 }

\author{C.~Hill}
\affiliation{University of California at Santa Barbara, Santa Barbara, California 93106 }

\author{D.~Hirschbuehl}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{A.~Hocker}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{K.D.~Hoffman}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{A.~Holloway}
\affiliation{Harvard University, Cambridge, Massachusetts 02138 }

\author{S.~Hou}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China }

\author{M.A.~Houlden}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom }

\author{B.T.~Huffman}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom }

\author{Y.~Huang}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{R.E.~Hughes}
\affiliation{The Ohio State University, Columbus, Ohio 43210 }

\author{J.~Huston}
\affiliation{Michigan State University, East Lansing, Michigan 48824 }

\author{K.~Ikado}
\affiliation{Waseda University, Tokyo 169, Japan }

\author{J.~Incandela}
\affiliation{University of California at Santa Barbara, Santa Barbara, California 93106 }

\author{G.~Introzzi}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{M.~Iori}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{Y.~Ishizawa}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{C.~Issever}
\affiliation{University of California at Santa Barbara, Santa Barbara, California 93106 }

\author{A.~Ivanov}
\affiliation{University of California at Davis, Davis, California 95616 }

\author{Y.~Iwata}
\affiliation{Hiroshima University, Higashi-Hiroshima 724, Japan }

\author{B.~Iyutin}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{E.~James}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{D.~Jang}
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }

\author{B.~Jayatilaka}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{D.~Jeans}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{H.~Jensen}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{E.J.~Jeon}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{M.~Jones}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{K.K.~Joo}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{S.Y.~Jun}
\affiliation{Carnegie Mellon University, Pittsburgh, PA 15213 }

\author{T.~Junk}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{T.~Kamon}
\affiliation{Texas A\&M University, College Station, Texas 77843 }

\author{J.~Kang}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{M.~Karagoz~Unel}
\affiliation{Northwestern University, Evanston, Illinois 60208 }

\author{P.E.~Karchin}
\affiliation{Wayne State University, Detroit, Michigan 48201 }

\author{Y.~Kato}
\affiliation{Osaka City University, Osaka 588, Japan }

\author{Y.~Kemp}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{R.~Kephart}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{U.~Kerzel}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{V.~Khotilovich}
\affiliation{Texas A\&M University, College Station, Texas 77843 }

\author{B.~Kilminster}
\affiliation{The Ohio State University, Columbus, Ohio 43210 }

\author{D.H.~Kim}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{H.S.~Kim}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{J.E.~Kim}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{M.J.~Kim}
\affiliation{Carnegie Mellon University, Pittsburgh, PA 15213 }

\author{M.S.~Kim}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{S.B.~Kim}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{S.H.~Kim}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{Y.K.~Kim}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{M.~Kirby}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{L.~Kirsch}
\affiliation{Brandeis University, Waltham, Massachusetts 02254 }

\author{S.~Klimenko}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{B.~Knuteson}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{B.R.~Ko}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{H.~Kobayashi}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{D.J.~Kong}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{K.~Kondo}
\affiliation{Waseda University, Tokyo 169, Japan }

\author{J.~Konigsberg}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{K.~Kordas}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{A.~Korn}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{A.~Korytov}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{A.V.~Kotwal}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{A.~Kovalev}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{J.~Kraus}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{I.~Kravchenko}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{A.~Kreymer}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{J.~Kroll}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{M.~Kruse}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{V.~Krutelyov}
\affiliation{Texas A\&M University, College Station, Texas 77843 }

\author{S.E.~Kuhlmann}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439 }

\author{S.~Kwang}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{A.T.~Laasanen}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{S.~Lai}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{S.~Lami}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }
\affiliation{The Rockefeller University, New York, New York 10021 }

\author{S.~Lammel}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{M.~Lancaster}
\affiliation{University College London, London WC1E 6BT, United Kingdom }

\author{R.~Lander}
\affiliation{University of California at Davis, Davis, California 95616 }

\author{K.~Lannon}
\affiliation{The Ohio State University, Columbus, Ohio 43210 }

\author{A.~Lath}
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }

\author{G.~Latino}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{R.~Lauhakangas}
\affiliation{Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00044, Helsinki, Finland }

\author{I.~Lazzizzera}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{C.~Lecci}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{T.~LeCompte}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439 }

\author{J.~Lee}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{J.~Lee}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{S.W.~Lee}
\affiliation{Texas A\&M University, College Station, Texas 77843 }

\author{R.~Lef\`{e}vre}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain }

\author{N.~Leonardo}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{S.~Leone}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{S.~Levy}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{J.D.~Lewis}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{K.~Li}
\affiliation{Yale University, New Haven, Connecticut 06520 }

\author{C.~Lin}
\affiliation{Yale University, New Haven, Connecticut 06520 }

\author{C.S.~Lin}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{M.~Lindgren}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{E.~Lipeles}
\affiliation{University of California at San Diego, La Jolla, California 92093 }

\author{T.M.~Liss}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{A.~Lister}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland }

\author{D.O.~Litvintsev}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{T.~Liu}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{Y.~Liu}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland }

\author{N.S.~Lockyer}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{A.~Loginov}
\affiliation{Institution for Theoretical and Experimental Physics, ITEP, Moscow 117259, Russia }

\author{M.~Loreti}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{P.~Loverre}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{R-S.~Lu}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China }

\author{D.~Lucchesi}
\affiliation{University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy }

\author{P.~Lujan}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{P.~Lukens}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{G.~Lungu}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{L.~Lyons}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom }

\author{J.~Lys}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{R.~Lysak}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China }

\author{E.~Lytken}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{D.~MacQueen}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{R.~Madrak}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{K.~Maeshima}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{P.~Maksimovic}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218 }

\author{N.~Maladinovic}
\affiliation{Brandeis University, Waltham, Massachusetts 02254 }

\author{G.~Manca}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom }

\author{R.~Marginean}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{C.~Marino}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{A.~Martin}
\affiliation{Yale University, New Haven, Connecticut 06520 }

\author{M.~Martin}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218 }

\author{V.~Martin}
\affiliation{Northwestern University, Evanston, Illinois 60208 }

\author{M.~Mart\'{\i}nez}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain }

\author{T.~Maruyama}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{H.~Matsunaga}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{M.~Mattson}
\affiliation{Wayne State University, Detroit, Michigan 48201 }

\author{P.~Mazzanti}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy }

\author{K.S.~McFarland}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{D.~McGivern}
\affiliation{University College London, London WC1E 6BT, United Kingdom }

\author{P.M.~McIntyre}
\affiliation{Texas A\&M University, College Station, Texas 77843 }

\author{P.~McNamara}
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }

\author{A.~Mehta}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom }

\author{S.~Menzemer}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{A.~Menzione}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{P.~Merkel}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{C.~Mesropian}
\affiliation{The Rockefeller University, New York, New York 10021 }

\author{A.~Messina}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{T.~Miao}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{J.~Miles}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{L.~Miller}
\affiliation{Harvard University, Cambridge, Massachusetts 02138 }

\author{R.~Miller}
\affiliation{Michigan State University, East Lansing, Michigan 48824 }

\author{J.S.~Miller}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{C.~Mills}
\affiliation{University of California at Santa Barbara, Santa Barbara, California 93106 }

\author{R.~Miquel}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{S.~Miscetti}
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy }

\author{G.~Mitselmakher}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{A.~Miyamoto}
\affiliation{High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan }

\author{N.~Moggi}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy }

\author{B.~Mohr}
\affiliation{University of California at Los Angeles, Los Angeles, California 90024 }

\author{R.~Moore}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{M.~Morello}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{P.A.~Movilla~Fernandez}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{J.~Muelmenstaedt}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{A.~Mukherjee}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{M.~Mulhearn}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{T.~Muller}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{R.~Mumford}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218 }

\author{A.~Munar}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{P.~Murat}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{J.~Nachtman}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{S.~Nahn}
\affiliation{Yale University, New Haven, Connecticut 06520 }

\author{I.~Nakano}
\affiliation{Okayama University, Okayama 700-8530, Japan }

\author{A.~Napier}
\affiliation{Tufts University, Medford, Massachusetts 02155 }

\author{R.~Napora}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218 }

\author{D.~Naumov}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131 }

\author{V.~Necula}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{J.~Nielsen}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{T.~Nelson}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{C.~Neu}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{M.S.~Neubauer}
\affiliation{University of California at San Diego, La Jolla, California 92093 }

\author{T.~Nigmanov}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260 }

\author{L.~Nodulman}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439 }

\author{O.~Norniella}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain }

\author{T.~Ogawa}
\affiliation{Waseda University, Tokyo 169, Japan }

\author{S.H.~Oh}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{Y.D.~Oh}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{T.~Ohsugi}
\affiliation{Hiroshima University, Higashi-Hiroshima 724, Japan }

\author{T.~Okusawa}
\affiliation{Osaka City University, Osaka 588, Japan }

\author{R.~Oldeman}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom }

\author{R.~Orava}
\affiliation{Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00044, Helsinki, Finland }

\author{W.~Orejudos}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{K.~Osterberg}
\affiliation{Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00044, Helsinki, Finland }

\author{C.~Pagliarone}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{E.~Palencia}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain }

\author{R.~Paoletti}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{V.~Papadimitriou}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{A.A.~Paramonov}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{S.~Pashapour}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{J.~Patrick}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{G.~Pauletta}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy }

\author{M.~Paulini}
\affiliation{Carnegie Mellon University, Pittsburgh, PA 15213 }

\author{C.~Paus}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{D.~Pellett}
\affiliation{University of California at Davis, Davis, California 95616 }

\author{A.~Penzo}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy }

\author{T.J.~Phillips}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{G.~Piacentino}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{J.~Piedra}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain }

\author{K.T.~Pitts}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{C.~Plager}
\affiliation{University of California at Los Angeles, Los Angeles, California 90024 }

\author{L.~Pondrom}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706 }

\author{G.~Pope}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260 }

\author{X.~Portell}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain }

\author{O.~Poukhov}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia }

\author{N.~Pounder}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom }

\author{F.~Prakoshyn}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia }

\author{T.~Pratt}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom }

\author{A.~Pronko}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{J.~Proudfoot}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439 }

\author{F.~Ptohos}
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy }

\author{G.~Punzi}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{J.~Rademacker}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom }

\author{M.A.~Rahaman}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260 }

\author{A.~Rakitine}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{S.~Rappoccio}
\affiliation{Harvard University, Cambridge, Massachusetts 02138 }

\author{F.~Ratnikov}
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }

\author{H.~Ray}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{B.~Reisert}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{V.~Rekovic}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131 }

\author{P.~Renton}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom }

\author{M.~Rescigno}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{F.~Rimondi}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy }

\author{K.~Rinnert}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{L.~Ristori}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{W.J.~Robertson}
\affiliation{Duke University, Durham, North Carolina 27708 }

\author{A.~Robson}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom }

\author{T.~Rodrigo}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain }

\author{S.~Rolli}
\affiliation{Tufts University, Medford, Massachusetts 02155 }

\author{R.~Roser}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{R.~Rossin}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{C.~Rott}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{J.~Russ}
\affiliation{Carnegie Mellon University, Pittsburgh, PA 15213 }

\author{V.~Rusu}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{A.~Ruiz}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain }

\author{D.~Ryan}
\affiliation{Tufts University, Medford, Massachusetts 02155 }

\author{H.~Saarikko}
\affiliation{Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00044, Helsinki, Finland }

\author{S.~Sabik}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{A.~Safonov}
\affiliation{University of California at Davis, Davis, California 95616 }

\author{R.~St.~Denis}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom }

\author{W.K.~Sakumoto}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{G.~Salamanna}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{D.~Saltzberg}
\affiliation{University of California at Los Angeles, Los Angeles, California 90024 }

\author{C.~Sanchez}
\affiliation{Institut de Fisica d'Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain }

\author{L.~Santi}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy }

\author{S.~Sarkar}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{K.~Sato}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{P.~Savard}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{A.~Savoy-Navarro}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{P.~Schlabach}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{E.E.~Schmidt}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{M.P.~Schmidt}
\affiliation{Yale University, New Haven, Connecticut 06520 }

\author{M.~Schmitt}
\affiliation{Northwestern University, Evanston, Illinois 60208 }

\author{L.~Scodellaro}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain }

\author{A.L.~Scott}
\affiliation{University of California at Santa Barbara, Santa Barbara, California 93106 }

\author{A.~Scribano}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{F.~Scuri}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{A.~Sedov}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{S.~Seidel}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131 }

\author{Y.~Seiya}
\affiliation{Osaka City University, Osaka 588, Japan }

\author{A.~Semenov}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia }

\author{F.~Semeria}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy }

\author{L.~Sexton-Kennedy}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{I.~Sfiligoi}
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy }

\author{M.D.~Shapiro}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{T.~Shears}
\affiliation{University of Liverpool, Liverpool L69 7ZE, United Kingdom }

\author{P.F.~Shepard}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260 }

\author{D.~Sherman}
\affiliation{Harvard University, Cambridge, Massachusetts 02138 }

\author{M.~Shimojima}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{M.~Shochet}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{Y.~Shon}
\affiliation{University of Wisconsin, Madison, Wisconsin 53706 }

\author{I.~Shreyber}
\affiliation{Institution for Theoretical and Experimental Physics, ITEP, Moscow 117259, Russia }

\author{A.~Sidoti}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{A.~Sill}
\affiliation{Texas Tech University, Lubbock, Texas 79409 }

\author{P.~Sinervo}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{A.~Sisakyan}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia }

\author{J.~Sjolin}
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom }

\author{A.~Skiba}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{A.J.~Slaughter}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{K.~Sliwa}
\affiliation{Tufts University, Medford, Massachusetts 02155 }

\author{D.~Smirnov}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131 }

\author{J.R.~Smith}
\affiliation{University of California at Davis, Davis, California 95616 }

\author{F.D.~Snider}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{R.~Snihur}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{M.~Soderberg}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{A.~Soha}
\affiliation{University of California at Davis, Davis, California 95616 }

\author{S.V.~Somalwar}
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }

\author{J.~Spalding}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{M.~Spezziga}
\affiliation{Texas Tech University, Lubbock, Texas 79409 }

\author{F.~Spinella}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{P.~Squillacioti}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{H.~Stadie}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{M.~Stanitzki}
\affiliation{Yale University, New Haven, Connecticut 06520 }

\author{B.~Stelzer}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{O.~Stelzer-Chilton}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{D.~Stentz}
\affiliation{Northwestern University, Evanston, Illinois 60208 }

\author{J.~Strologas}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131 }

\author{D.~Stuart}
\affiliation{University of California at Santa Barbara, Santa Barbara, California 93106 }

\author{J.~S.~Suh}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{A.~Sukhanov}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{K.~Sumorok}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{H.~Sun}
\affiliation{Tufts University, Medford, Massachusetts 02155 }

\author{T.~Suzuki}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{A.~Taffard}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{R.~Tafirout}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{H.~Takano}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{R.~Takashima}
\affiliation{Okayama University, Okayama 700-8530, Japan }

\author{Y.~Takeuchi}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{K.~Takikawa}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{M.~Tanaka}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439 }

\author{R.~Tanaka}
\affiliation{Okayama University, Okayama 700-8530, Japan }

\author{N.~Tanimoto}
\affiliation{Okayama University, Okayama 700-8530, Japan }

\author{M.~Tecchio}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{P.K.~Teng}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China }

\author{K.~Terashi}
\affiliation{The Rockefeller University, New York, New York 10021 }

\author{R.J.~Tesarek}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{S.~Tether}
\affiliation{Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 }

\author{J.~Thom}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{A.S.~Thompson}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom }

\author{E.~Thomson}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{P.~Tipton}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{V.~Tiwari}
\affiliation{Carnegie Mellon University, Pittsburgh, PA 15213 }

\author{S.~Tkaczyk}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{D.~Toback}
\affiliation{Texas A\&M University, College Station, Texas 77843 }

\author{K.~Tollefson}
\affiliation{Michigan State University, East Lansing, Michigan 48824 }

\author{T.~Tomura}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{D.~Tonelli}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{M.~T\"{o}nnesmann}
\affiliation{Michigan State University, East Lansing, Michigan 48824 }

\author{S.~Torre}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{D.~Torretta}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{S.~Tourneur}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{W.~Trischuk}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{R.~Tsuchiya}
\affiliation{Waseda University, Tokyo 169, Japan }

\author{S.~Tsuno}
\affiliation{Okayama University, Okayama 700-8530, Japan }

\author{D.~Tsybychev}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{N.~Turini}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{F.~Ukegawa}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{T.~Unverhau}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom }

\author{S.~Uozumi}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan }

\author{D.~Usynin}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{L.~Vacavant}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{A.~Vaiciulis}
\affiliation{University of Rochester, Rochester, New York 14627 }

\author{A.~Varganov}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{S.~Vejcik~III}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{G.~Velev}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{V.~Veszpremi}
\affiliation{Purdue University, West Lafayette, Indiana 47907 }

\author{G.~Veramendi}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{T.~Vickey}
\affiliation{University of Illinois, Urbana, Illinois 61801 }

\author{R.~Vidal}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{I.~Vila}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain }

\author{R.~Vilar}
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain }

\author{I.~Vollrath}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{I.~Volobouev}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{M.~von~der~Mey}
\affiliation{University of California at Los Angeles, Los Angeles, California 90024 }

\author{P.~Wagner}
\affiliation{Texas A\&M University, College Station, Texas 77843 }

\author{R.G.~Wagner}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439 }

\author{R.L.~Wagner}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{W.~Wagner}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{R.~Wallny}
\affiliation{University of California at Los Angeles, Los Angeles, California 90024 }

\author{T.~Walter}
\affiliation{Institut f\"ur Experimentelle Kernphysik, Universit\"at Karlsruhe, 76128 Karlsruhe, Germany }

\author{Z.~Wan}
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }

\author{M.J.~Wang}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China }

\author{S.M.~Wang}
\affiliation{University of Florida, Gainesville, Florida 32611 }

\author{A.~Warburton}
\affiliation{Institute of Particle Physics: McGill University, Montr\'eal, Canada H3A~2T8; and University of Toronto, Toronto, Canada M5S~1A7 }

\author{B.~Ward}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom }

\author{S.~Waschke}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom }

\author{D.~Waters}
\affiliation{University College London, London WC1E 6BT, United Kingdom }

\author{T.~Watts}
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }

\author{M.~Weber}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{W.C.~Wester~III}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{B.~Whitehouse}
\affiliation{Tufts University, Medford, Massachusetts 02155 }

\author{D.~Whiteson}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{A.B.~Wicklund}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439 }

\author{E.~Wicklund}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{H.H.~Williams}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{P.~Wilson}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{B.L.~Winer}
\affiliation{The Ohio State University, Columbus, Ohio 43210 }

\author{P.~Wittich}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{S.~Wolbers}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{C.~Wolfe}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{M.~Wolter}
\affiliation{Tufts University, Medford, Massachusetts 02155 }

\author{M.~Worcester}
\affiliation{University of California at Los Angeles, Los Angeles, California 90024 }

\author{S.~Worm}
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }

\author{T.~Wright}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109 }

\author{X.~Wu}
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland }

\author{F.~W\"urthwein}
\affiliation{University of California at San Diego, La Jolla, California 92093 }

\author{A.~Wyatt}
\affiliation{University College London, London WC1E 6BT, United Kingdom }

\author{A.~Yagil}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{T.~Yamashita}
\affiliation{Okayama University, Okayama 700-8530, Japan }

\author{K.~Yamamoto}
\affiliation{Osaka City University, Osaka 588, Japan }

\author{J.~Yamaoka}
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }

\author{C.~Yang}
\affiliation{Yale University, New Haven, Connecticut 06520 }

\author{U.K.~Yang}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 }

\author{W.~Yao}
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720 }

\author{G.P.~Yeh}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{J.~Yoh}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{K.~Yorita}
\affiliation{Waseda University, Tokyo 169, Japan }

\author{T.~Yoshida}
\affiliation{Osaka City University, Osaka 588, Japan }

\author{I.~Yu}
\affiliation{Center for High Energy Physics: Kyungpook National University, Taegu 702-701; Seoul National University, Seoul 151-742; and SungKyunKwan University, Suwon 440-746; Korea }

\author{S.~Yu}
\affiliation{University of Pennsylvania, Philadelphia, Pennsylvania 19104 }

\author{J.C.~Yun}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 60510 }

\author{L.~Zanello}
\affiliation{Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma ``La Sapienza," I-00185 Roma, Italy }

\author{A.~Zanetti}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Trieste/\ Udine, Italy }

\author{I.~Zaw}
\affiliation{Harvard University, Cambridge, Massachusetts 02138 }

\author{F.~Zetti}
\affiliation{Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy }

\author{J.~Zhou}
\affiliation{Rutgers University, Piscataway, New Jersey 08855 }

\author{S.~Zucchelli}
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy }

\collaboration{CDF Collaboration}

\date{May 24, 2005}
%\date{\today}

\begin{abstract}
We present the first evidence of charmless decays of 
the $B_s^0$ meson,  the decay \phiphi, and a 
measurement of the Branching Ratio $\BR(\phiphi)$ 
%We present the first evidence for the decay \phiphi\ and a 
%measurement of the Branching Ratio $\BR(\phiphi)$ 
using $180\,{\rm pb}^{-1}$ of data collected 
by the \cdfii experiment at the Fermilab Tevatron collider. 
In addition, the BR and direct $CP$~asymmetry for the \phik\ decay
are measured. We obtain: 
$\BR (\phiphi) = (14 \ase{6}{5}(stat.) \pm 6(syst.)) \times 10^{-6}$,
$\BR (\phik) = (7.6 \pm 1.3(stat.) \pm 0.6(syst.) ) \times 10^{-6}$,
and $\ACP(\phik) = -0.07 \pm 0.17 (stat.) \ase{0.03}{0.02} (syst.)$.
Both decays are governed in the Standard Model by second order (penguin) 
$b \myto s\bar{s}s$ amplitudes.
\end{abstract}

\pacs{
13.25.Hw   % Hadronic decays of bottom mesons
14.40.Nd   % Bottom mesons
}

%\keywords{Suggested keywords}%Use showkeys class option if keyword
                              %display desired
\maketitle


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Introduction
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%Charmless decays provide stringent tests of the 
%Standard Model (SM) predictions in $B$ meson decay.
Recent measurements~\cite{Belle-btos-ICHEP04,Babar-btos-ICHEP04} 
%~\cite{Ligeti-ICHEP04} 
of $CP$ asymmetries for
$B^0 \myto \phi K^0_S$ and $B^0 \myto \eta^\prime K^0_S$
suggest deviations from Standard Model (SM) predictions in
$B$~meson decays involving $b \myto s\bar{s}s$ transitions,
which also generate both \phiphi\ and \phik\
%~\cite{charge-conjugate-disclaimer} 
decays.
% Added 19/5/05 as per referee A suggestion
Charmless decays of $B^0$ and $B^+$ mesons provide
among the most stringent tests of the CKM matrix. 
Charmless $B_s^0$ decays, not yet experimentally 
established, offer important additional 
ways of testing the theory. Of particular interest for the 
current and next generation experiments at hadron colliders
are charmless $B_s^0$ to Vector-Vector decays into 
self-conjugate final states, like \phiphi.
%These modes are of special interest because the
%angular correlations in the final state allow the separation of
%$CP$-even and odd components of the decay amplitude. 
%With sufficient statistics, measurements of the decay 
%width difference (\DGs) and of CKM parameters and tests 
%of the predictions for polarizations will be 
%possible~\cite{BVV-theory}.
% Modified 2/5/05 to answer referee B criticiscm
Exploiting angular correlations between the final state particles
in \BsVV decays allows the statistical separation of the 
$CP$-even and $CP$-odd components of the decay amplitude.
With sufficient statistics, this decompostion allows the 
measurement of the $B_s^0$ decay width difference (\DGs), CKM studies, and
tests of decay polarization predictions~\cite{BVV-theory}.
% Modified 19/5/05 as per referee A suggestion
In particular, the \phiphi\ decay, which proceeds through a pure 
$b \myto s\bar{s}s$, has been considered as a probe for New Physics 
scenarios ~\cite{phiphi-Theory} 
(e.g. in $b \myto s$ penguin dominated decays) recently
advocated to explain the observed $b \myto s\bar{s}s$ asymmetries.
%
% Added 19/5/05 as per referee A suggestion
The measurement of the branching ratio $\BR(\phiphi)$ gives insight into the
size of penguin amplitudes as well as tightens the constraints on 
poorly known form factors.
%
Recent calculations %~\cite{QCDF} 
predict $\BR(\phiphi)$ between 
$10\times 10^{-6}$~\cite{phiphi-PQCD} and $37\times 10^{-6}$~\cite{phiphi-BR}.
Within the SM the \phik\ direct $CP$ asymmetry ($\ACP$) is predicted 
not to exceed a few percent~\cite{phiktheory}. 
No single experiment~\cite{pdg2004} has
yet reached the sensitivity to detect this asymmetry. Further 
measurements of decay rates and \ACP\ may help identifying
the origin of the observed deviations from 
SM predictions in $b \myto s\bar{s}s$ penguin dominated 
$B$ decays.
\newline
%
%% Possibile altro argomento charming penguin vs QCDF?
%% Il BR in QCDF e' infatti piuttosto sottostimato
%
\indent We report the first evidence of \phiphi\ decays, and present
the first measurements of the $CP$-averaged BR and \ACP\ for
\phik~\cite{charge-conjugate-disclaimer} at hadron colliders.
%(charge conjugate modes are implied throughout this letter
%unless otherwise stated).
To cancel the uncertainty in the $B$~hadron production cross section and
to reduce systematic uncertainties on detector efficiencies,
the branching fractions are extracted from ratios of the decay
rates of interest normalized to the established
\psiphi\ and \psik\ decay modes, which are characterized by the
same number of decay vertices and charged tracks in the final state
as in the signal modes.
\newline
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Detector and dataset
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\indent 
In this analysis we use 180~\ipb\ of $p\bar p$~collision data
at $\sqrt{s}=1.96$~TeV collected by the upgraded 
Collider Detector (CDF\,II) at the Fermilab Tevatron.
The components of the \cdfii detector pertinent to this analysis are 
briefly described. A more complete description can be found 
elsewhere~\cite{cdf}. 
We use  tracks in the pseudorapidity 
range $|\eta|\lesssim 1$~\cite{CDFsystem} reconstructed by a silicon microstrip 
vertex detector (SVX\,II)~\cite{svxii} 
and the Central Outer Tracker (COT)~\cite{cot}, 
which are immersed in a $1.4\,{\rm T}$ solenoidal magnetic field. 
The SVX\,II detector consists of double-sided  
sensors arranged in five cylindrical layers.
Surrounding the SVX\,II  is the COT, an open cell drift chamber with 
$96$ sense wires.
%organized in $8$ superlayers with alternating axial and 
%$\pm\,2^\circ$ stereo readout. 
The integrated charge collected by each wire provides a 
measurement of the specific ionization ($dE/dx$) for charged particles, 
allowing a separation equivalent to 
1.4 Gaussian $\sigma$ between $\pi$ and $K$ for $p_T > 2\ \GeVc$.
% 
% Muon detector description (taken from recent CDF 7149 draft)
%
A set of planar drift chambers, located outside the calorimeters and 
additional steel absorbers, is used to detect muons within
$|\eta|\le 1$ with high purity. \newline
%
%% displaced track trigger
%
\indent 
A sample enriched with heavy flavor particles is 
selected by the three-level displaced track trigger.
At Level~1, charged tracks are reconstructed in the COT 
by the eXtremely Fast Tracker (XFT)~\cite{xft}.
The trigger requires two oppositely charged tracks with transverse
momenta $p_T\ge2\,\GeVc$ and the scalar sum 
$p_{T1}+p_{T2}\ge5.5\,\GeVc$. At 
Level~2, the Silicon Vertex Tracker (SVT)~\cite{svt} associates SVX\,II
$r$-$\phi$ position measurements with XFT tracks, providing 
a precise measurement of the track impact parameter ($d_0$), 
the distance of closest approach of the track trajectory to 
the beam axis in the transverse plane.
Decays of heavy flavor particles are identified by requiring 
two tracks with $120\,\mu{\rm m}\le d_0 \le1.0\rm\,mm$ and 
an opening angle $2^\circ\le|\Delta\phi|\le90^\circ$.
A requirement $\Lxy >200\rm\,\mu m$ is also applied,
where the two-dimensional decay length, $\Lxy$, is calculated
as the transverse distance from the beam axis to the two track 
intersection projected onto the total transverse momentum of the 
track pair.
%CMU suggestion
A complete event reconstruction is performed at Level 3, where the
Level 1 and Level 2 trigger requirements are confirmed.
% 
%% LOWPT trigger
%
%In addition, for most of the data considered here, a different trigger
%selection with looser 
%%no $p_{T1}+p_{T2}$ and opposite charge 
%requirements was part of the trigger menu with a prescale factor automatically
%adjusted to fill the DAQ bandwidth available at low instantaneous luminosity. 
%The effective luminosity collected with the prescaled trigger is 
%$102\pm6$ \ipb.
\newline
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Reconstruction and J/psi issues. 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\indent $B$~candidates are reconstructed by detecting \phiKK\ and \psimm\
decays. In the latter case at least one of the muons has to be identified 
in the muon detectors 
to suppress contamination from other two-body $J/\psi$ decays. 
At least one pair of tracks ("trigger tracks"), has to satisfy 
the trigger requirements. $B^+$ ($B_s^0$) candidates are 
formed by fitting three (four) tracks with $p_T > 0.4\, \GeVc$ to 
a common vertex. 
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Selection Optimization
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Requiring a good vertex fit $\chi^2$ reduces background from mismeasured tracks.
Combinatoric background is reduced by exploiting several
variables sensitive to the long lifetime and relatively
hard $p_T$ spectrum of $B$ mesons and the isolation of $B$~hadrons inside 
$b$-quark jets. For this purpose we define the quantity $I_{R}$ as the
ratio of the $B^+$ candidate $p_{T}$ over the total transverse momenta 
of all tracks within a cone of radius $R=\sqrt{\Delta\eta^2+\Delta\phi^2}=1$ 
around the $B$~flight direction. 
Requiring the $B$~flight direction to extrapolate back to the beam axis
decreases background from partially reconstructed decays. 
The cut values on the discriminating variables are optimized by maximizing 
$\mathcal {S/\sqrt{S+B}}$ for the already observed \phik\ signal 
and $\mathcal{S}/(1.5+\sqrt{\mathcal{B}})$ for \phiphi\ 
whose branching ratio is unknown. 
The latter choice is equivalent to maximizing the  
potential to reach a $3\sigma$ observation of a new signal~\cite{Punzi}.
%%%%%%%%%%%%%%%%%%%%%
% MC simulations ....
%%%%%%%%%%%%%%%%%%%%%
The signal ($\mathcal{S}$) is derived from a
%GEANT~\cite{geant} based 
Monte Carlo (MC) simulation~\cite{cdfsim} of the \cdfii detector and trigger
that uses the $B$~meson momentum and rapidity distributions from Ref.~\cite{MNR},
which were matched to CDF data.
The background ($\mathcal{B}$) is represented by appropriately normalized 
data selected with the same requirements as the signal except 
for the two-kaon invariant mass lying in the 
$\phi$ sideband region: $1.04 < m_{KK} < 1.06\ \GeVcc$. 
\newline
%%%%%%%%%%%%%%%%%%%%%
% B->phiK figure
%%%%%%%%%%%%%%%%%%%%%
\begin{figure}
\includegraphics[width=1.00\linewidth]{./phik_plot_v3.eps} %PRL dimensions
%\includegraphics[scale=0.7]{./PRL_plots/phik_plot_v3.eps} %CDF note enlarged
\caption{\label{fig_phik}
$m_{KKK}$ (left) and $m_{KK}$ (right) distributions 
for \phik\ with projections of the total likelihood function and its 
components. $B^+\myto K^+K^-K^+$ is the sum of 
non-resonant and $B^+\myto f_0(980) K^+$ contributions, while
$B^+\myto K^+\pi^-\pi^+$ includes non-resonant and
$B^+\myto K^{\ast 0}(892) \pi^+$.
}
\end{figure}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% B->phiK analysis
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\indent
 We discuss first the \phik\ analysis.
The optimization results in the following requirements:  
%
vertex $\chi^2 < 8$, $B^+$~decay 
length $\Lxy > 350$ $\mu$m, $B^+$ reconstructed impact 
parameter $d_0^B < 100$ $\mu$m, isolation  $I_{R} > 0.5$,
non-trigger track transverse momentum $p_T^{\text{\it soft}}> 1.3$ $\GeVc$ and
impact parameter $d_0^{\text{\it soft}}> 120$ $\mu$m. 
\newline
%
\indent
The \phikpm\ total yield and \ACP, defined as
%
\begin{eqnarray*}
\label{eq:ACPphik}
%\(
\ACP \equiv \frac{N(B^-\to\phi K^-) - N(B^+\to\phi K^+)}
{N( B^-\to\phi K^-) + N(B^+\to\phi K^+)} \ ,
%\)
\end{eqnarray*}
%
are extracted simultaneously from an extended unbinned maximum likelihood fit
%~\cite{Extended} 
on four variables to the combined $B^+$ and $B^-$ sample: 
the three-kaon invariant mass ($m_{KKK}$), the invariant mass of the
$\phi$ candidate ($m_{KK}$), the cosine of the $\phi$ meson helicity angle
(defined as the angle between the $K^+$ momentum in the parent $\phi$
rest frame and the momentum of the $\phi$ in the $B$ rest frame)
and the measured $dE/dx$ deviation from the expected value for pions 
for the lowest momentum trigger track.
The likelihood function has seven components: signal, partially reconstructed 
$b\myto \phi X$ decays, combinatoric background, 
$B^+\myto K^{\ast 0}(892) \pi^+$, with $\kstar \myto K^+\pi^-$, 
$B^+\myto f_0(980) K^+$, with $f_0\myto K^+K^-$,  
non-resonant $B^+\myto K^+K^-K^+$ and non-resonant $B^+\myto K^+\pi^-\pi^+$.
The normalizations of the last three components are fixed to the
$B^+\myto K^{\ast 0}(892) \pi^+$ yield, determined in the fit, through
their relative decay rates and detection efficiencies. 
For each component the likelihood function 
is the product of four one-dimensional probability density functions (PDF)
of the fit variables, which are assumed to be uncorrelated.
%
The $m_{KKK}$ and $m_{KK}$ distributions are shown in Fig.~\ref{fig_phik}
with projections for the different components.
\newline
\indent A combination of Monte Carlo simulation and sideband
data is used to derive the PDF
in each variable for the various fit components.
%
For $m_{KKK}$ the fully reconstructed signals 
are modeled by Gaussian functions. The mass and width of the $B$~signals 
are determined from the fit in the case of $KKK$ final states,
while for $K\pi\pi$ they are fixed to the values predicted by the simulation.
We derive a parameterization from simulation for the partially reconstructed 
decays that populate the low mass side of the $m_{KKK}$ distribution. 
An exponential plus a constant describe the combinatoric background.
%
In the PDF for $m_{KK}$, the $\phi$ resonance is described by a Breit-Wigner
convoluted with a Gaussian resolution function, while the combinatoric
background is modeled by an empirical phase space function. 
Shapes for other backgrounds are derived from simulation.
%
The $\phi$ helicity PDFs for $B$ decays are derived from simulation, while 
the combinatoric background PDF is modeled using data from the $\phi$ sideband. 
%
The $dE/dx$ PDFs for kaons and pions are derived from 
a high statistics $D^0 \myto K^-\pi^+$ sample 
obtained from $D^{\ast\pm}$ decays.
%
We find $N_{\phi K}=47.0\pm 8.4$, $\ACP = -0.07 \pm 0.17$ and
$N_{K^{\ast 0}\pi^+} = 7.8 \pm 6.0$ (statistical errors only) from which we
estimate a $B^+\myto f_0(980) K^+$ contamination of 11\% under the signal peak.
\newline
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% B+->J/psi k result
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\indent 
Candidates for the normalization mode, \psik, are selected with 
the same requirements as the \phik\ candidates except for the invariant 
mass of the two muons being within 100 \MeVcc\ of the $J/\psi$ mass~\cite{pdg2004}.
Using an extended likelihood fit of the $m_{\mu\mu K}$ and $m_{\mu\mu}$ 
distributions, we obtain a total yield of $N_{\psi K}=439\pm 22$
(statistical error only). The asymmetry $\ACP(\psik) = 0.046 \pm 0.050$ 
is consistent with zero as expected for this mode.
\newline
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% B->phiK results
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\indent
The relative \phik\ decay rate is calculated using:
\begin{eqnarray*}
\label{eq:BRphik}
\frac{\BR\left(\phik \right)}{\BR\left(\psik \right)} =
\frac{N_{\phi K}}{N_{\psi K}}
\frac{\BR\left(J/\psi\to\mu\mu\right)}{\BR \left(\phi\to K K \right)}
\frac{\epsilon_{\psi K}}{\epsilon_{\phi K}} \, \epsilon^\mu_{\psi K},
\end{eqnarray*}
%
where $\epsilon_{\psi K}/\epsilon_{\phi K}=0.721\pm 0.011$ is the ratio of 
the combined trigger and selection efficiencies derived from MC with 
a correction of about 5\% due to the different 
trigger efficiency for muons and kaons as measured in unbiased samples.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% muon id efficiency
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
The efficiency for identifying at least one of the decay muons,
$\epsilon^\mu_{\psi K}=0.81\pm 0.02$, is obtained by weighting the expected 
$p_T$ spectra in our signal with the single muon identification efficiency
measured as a function of $p_T$ in a sample of inclusive \psimm\ decays. 
%where one muon is identified in the muon detectors 
The relative $\BR(\phik)$ and $\ACP$ results are 
reported in Table~\ref{tab:summResults}.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% B->phik syst
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\begin{figure*} 
\includegraphics[width=0.42\linewidth]{./BsPhiPhi_PRL_v2.eps} %PRL dimensions
\includegraphics[width=0.42\linewidth]{./BsJpsiPhi_PRL_v2.eps} %PRL dimensions
\caption{\label{fig_phiphi}
Invariant mass distribution for $\phiphi$ (left) and $\psiphi$ (right)
candidates. The arrows indicate the signal region for the 
$\phiphi$ search. The fit described in the text is superimposed 
on the $m_{\mu\mu K K}$ distribution.}
\end{figure*}
%
Systematic uncertainties on signal yield ($\pm 1.4$ events) and asymmetry 
(+0.03, -0.02) are evaluated by varying the PDFs used in the likelihood fit, 
including a variation of the $f_0(980)$ width from 40 to 
100~\MeVcc. The uncertainties on the determination of efficiency 
and muon identification introduce a 5.6\% relative error in the 
measurement of the branching ratio and have no effect for \ACP. 
The uncertainties from BR($\phi \myto KK$) and BR($J/\psi \myto \mu\mu$) 
contribute an additional 2\% to the total systematic.
%
%% syst. on ACP 
%
We determine a $\pm 0.005$ uncertainty on the \ACP\ measurement 
arising from a possible tracking efficiency asymmetry
for $K^+$ and $K^-$ as measured in minimum bias data.
%%%%% 
\begin{table}[h]
\caption{\label{tab:summResults} 
Results for \phik\ and \phiphi\ decays. World average~\cite{pdg2004} 
$\phi\myto K^+K^-$ and $J/\psi\myto \mpmm$ BR have been used to obtain 
the BR ratio $\BR(\phik)/\BR(\psik)$ and $\BR(\phiphi)/\BR(\psiphi)$. 
The first uncertainty is statistical, the second is systematic.}
\begin{ruledtabular}
\begin{tabular}{lcc}
                          & $ \phik  $  &  $\phiphi $ \\\hline
Yield                     & $47.0 \pm 8.4 \pm 1.4$                
                          & $ 7.3 \ase {3.2}{2.5} \pm 0.4 $ \\
%$\BR \times 10^6$         & $ 7.6 \pm 1.3 \pm 0.6 $ 
%                          & $ 14 \ase{6}{5} \pm 6$ \\
$\BR\, {\rm ratio}$       & $ (7.6 \pm 1.3 \pm 0.6)\times 10^{-3} $ 
                          & $ (10 \ase{5}{4} \pm 1)\times 10^{-3}$ \\
$\ACP$                    & $-0.07 \pm 0.17 ^{+0.03}_{-0.02}$ 
                          &  --  \\
\end{tabular}
\end{ruledtabular}
\end{table}
%
\newline
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%B->phiphi ``blind'' analysis
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\indent
%% Steve's version (with modifications)
A ``blind'' search for \phiphi\ decays was performed fixing the selection 
requirements and evaluating the combinatoric background from 
independent samples before examining the signal region in the data.
The signal is selected requiring two pairs of kaons 
having an invariant mass within 15 \MeVcc\ of the world average $\phi$ 
mass~\cite{pdg2004}. 
The optimized selection criteria are the following:
vertex %goodness-of-fit 
$\chi^2 < 10$, $B_s^0$~decay length
$\Lxy > 350\,\mu$m, $B_s^0$~reconstructed impact parameter $d_0^B<80\,\mu$m,
minimum $\phi$ meson transverse momentum $p_T^{\phi} >2.5\,\GeVc$ and 
minimum of the two kaons' impact parameters from each $\phi$ meson candidate
$d_{0\,min}^{\phi_1}> 40\,\mu$m, $d_{0\,min}^{\phi_2}> 110\,\mu$m,
where $\phi_1$ is the lower momentum $\phi$ candidate.
The \phiphi\  candidate mass distribution is shown in 
Fig.~\ref{fig_phiphi}.
In a region of $\pm 72\, \MeVcc$ around the world average~\cite{pdg2004}
$B_s^0$ mass,
corresponding to a window three times the 
expected mass resolution, we observe 8 events. \newline
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%B->phiphi background
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\indent Two sources of background are expected in the  $B_s^0$~signal region: 
combinatoric background 
%due to partially reconstructed decays with wrong mass assignment 
%or combination of displaced tracks with mismeasured prompt-tracks; 
and \phikst\ decays with the pion from the \kstar\ decay 
treated as a kaon.
The combinatoric background generates
a smooth distribution in the invariant mass region close
to $m_{B_s^0}$. Its contribution in the signal region is 
$0.35 \pm 0.37$ events (combining statistical and systematic
uncertainties), estimated using a background enriched sample where 
both $\phi$ meson candidates have invariant mass
lying in the $\phi$ mass sideband region.
The \phikst\ background results in an approximately Gaussian distribution 
underneath the $B_s^0$ signal. Its contribution, derived from 
simulation, is $0.37 \pm 0.18$ events where the error includes 
both statistical and systematic uncertainties,
resulting in a signal yield of $7.3 \ase {3.2}{2.5}$ events.
%
The probability of a Poisson fluctuation of the background 
to the observed or higher number of events is $1.3 \times 10^{-6}$, 
corresponding to 4.7 $\sigma$ one-sided Gaussian significance. 
%
%% LOWPT significance
%
%Adding the events selected uniquely by the prescaled trigger we 
%find 12 signal candidates with $1.95\pm0.63$ expected background, corresponding 
%to a $4.8\sigma$ significance.
\newline
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%B->J/psi phi analysis
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\indent For the determination of $\BR(\phiphi)$, 
a normalization sample of \psiphi\ decays is selected requiring one pair of kaons
and one pair of muons within 15 and 50 \MeVcc\ of the world average $\phi$ and
$J/\psi$ mass respectively. The other kinematic selection criteria 
are similar to the \phiphi\ mode.
%
To extract the number of \psiphi\ events, the candidate invariant mass 
distribution, shown in Fig.~\ref{fig_phiphi}, is fit with a binned maximum 
likelihood function using a Gaussian for the signal and an exponential 
for the background.
The fit returns 
$N_{\psi\phi} = 69 \pm 10(stat.) \pm 5 (syst.)$ events, where the 
systematic error is evaluated using alternative background models
for the low mass region where partially reconstructed 
$B$~decays are expected.  
We subtract $3.7\pm1.7$  background events from \psikst\ decays, 
with the pion treated as a kaon, as estimated from simulation.
\newline
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Bs->phiphi results
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\indent The \phiphi\ decay rate is derived from the relation:
\begin{eqnarray*}
\label{eq:BRphiphi}
\frac{\BR\left(\phiphi\right)}
     {\BR\left(\psiphi\right)} =
\frac{N_{\phi\phi}}{N_{\psi\phi}}
\frac{\BR\left(J/\psi\to\mu\mu\right)}{\BR \left(\phi\to K K \right)}
\frac{\epsilon_{\psi\phi}}{\epsilon_{\phi\phi}}\, \epsilon^{\mu}_{\psi\phi}\ ,
\end{eqnarray*}
%
% note we have dropped this detail...
%assuming the same polarization amplitudes for the \phiphi\ and \phikst\ decays
%~\cite{Belle-phikst}.
%
where $\epsilon_{\phi\phi}/\epsilon_{\psi\phi}=0.821\pm 0.015$ is 
derived from simulation as in the \phik\ case and 
$\epsilon^{\mu}_{\psi\phi} = 0.92 \pm 0.05$ is obtained
using the $p_T$ spectra of the \psiphi\ signal and the 
muon identification efficiency curve discussed above. 
\newline
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Bs->phiphi syst.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\indent The uncertainty on the \psiphi\ yield and  
background evaluation contribute 8\% to the relative systematic 
error. The efficiencies significantly depend on
both the polarization of the decay vector particles and the assumed 
value of \DGs\ since they affect the impact parameter 
of the decay products on which the trigger operates.
We vary the longitudinal polarization of the 
\phiphi\ decay from 20\% to 80\%, the \psiphi\ polarization amplitudes 
within $1\sigma$ of the CDF measurement~\cite{CDF-psiphiPol} and
\DGs\ in the range $0.06<\DGs/\Gamma_s<0.18$ to assign
a relative systematic uncertainty of 4\%.
Summing in quadrature all contributions, 
we estimate a total relative systematic uncertainty on
the ratio of BR(\phiphi) to BR(\psiphi) of 11\%. 
%
To convert the ratio BR(\phiphi)/BR(\psiphi) reported in 
Table~\ref{tab:summResults} in a measurement of BR(\phiphi),  
we use $\BR(\psiphi)=(1.38 \pm 0.49) \times 10^{-3}$, obtained from
correcting the CDF measurement~\cite{CDF-psiphiBR} for the current
value of $f_s/f_d$, the $B_s^0$ to $B^0$ production ratio~\cite{pdg2004}.
We derive:
$\BR (\phiphi) = ( 14 \ase{6}{5}(stat.) \pm 6(syst.) ) \times 10^{-6}$, 
where the systematic uncertainty includes a 36\% contribution 
due to the uncertainty on BR(\psiphi). 
\newline
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Conclusions
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\indent 
In summary, we have used $p\bar p$ collision data collected with the
displaced track trigger of the \cdfii detector to study 
two fully reconstructed $b \myto s\bar{s}s$ penguin dominated $B$ decays. 
Using the world average~\cite{pdg2004} BR(\psik) we measure:
$\BR (\phik) = (7.6 \pm 1.3(stat.) \pm 0.6(syst.) ) \times 10^{-6}$ and
$\ACP(\phik) = -0.07 \pm 0.17 (stat.) \ase{0.03}{0.02} (syst.)$
which agree with previous measurements~\cite{pdg2004}.
We find the first evidence of a charmless Vector-Vector $B_s^0$ decay and 
measure BR(\phiphi) in agreement with the estimate of Ref.~\cite{phiphi-PQCD}
% when using LCSR~\citeLCSR} form factors
and the recently amended calculation in~\cite{phiphi-BR}. 
\newline
\indent 
We thank the Fermilab staff and the technical staffs of the 
participating institutions for their vital contributions. 
This work was supported by the U.S. Department of Energy and 
National Science Foundation; the Italian Istituto Nazionale di 
Fisica Nucleare; the Ministry of Education, Culture, Sports, 
Science and Technology of Japan; the Natural Sciences and 
Engineering Research Council of Canada; the National Science 
Council of the Republic of China; the Swiss National Science Foundation; 
the A.P. Sloan Foundation; 
the Bundesministerium f\"ur Bildung und Forschung, Germany; 
the Korean Science and Engineering Foundation and 
the Korean Research Foundation; 
the Particle Physics and Astronomy Research Council and the Royal Society, UK;
the Russian Foundation for Basic Research; 
the Comision Interministerial de Ciencia y Tecnologia, Spain; 
and in part by the European Community's Human Potential Programme 
under contract HPRN-CT-2002-00292, Probe for New Physics.
%==============================================================================
\begin{thebibliography}{99}

%\bibitem{Ligeti-ICHEP04} Z.\, Ligeti, Proceedings of the ICHEP04 conference,
%arXiv:hep-ph/0408267.
%, Beijing, August 16-23 Phys. 

\bibitem{Belle-btos-ICHEP04}
K.~Abe {\it et al.}  [BELLE Collaboration],
%``New measurements of time-dependent CP-violating asymmetries in b $\to$ s
%transitions at Belle,''
arXiv:hep-ex/0409049.

\bibitem{Babar-btos-ICHEP04} 
%, Beijing, August 16-23 Phys. 
B.~Aubert {\it et al.}  [BABAR Collaboration],
%``Measurements of CP asymmetries in the decay B $\to$ Phi K,''
arXiv:hep-ex/0408072 and arXiv:hep-ex/0408090.
%B.~Aubert {\it et al.}  [BABAR Collaboration],
%``Measurement of time-dependent CP-violating asymmetries in B0 meson decays to
%eta' K0,''
%%arXiv:hep-ex/0408090.

\bibitem{BVV-theory} 
A.\,S.\, Dighe, I.\, Dunietz and R.\, Fleisher, Eur. Phys. J.
{\bf C6}, 647 (1999);
D.\,Atwood and A.\,Soni,
%``Determining the phases alpha and gamma from direct CP violation in  B/u, B/d
%and B/s decays to two vectors,''
Phys.\ Rev.\ D {\bf 65}, 073018 (2002).
%[arXiv:hep-ph/0106083].

\bibitem{phiphi-Theory}
M.\, Raidal,
%``CP asymmetry in B $\to$ Phi K(S) decays in left-right models and its
%implications on B/s decays,''
Phys.\ Rev.\ Lett.\  {\bf 89}, 231803 (2002);
A.\, Datta {\it et al.}, arXiv:hep-ph/0406192; submitted to Phys.\ Rev.\ D.
%, M.~Imbeault, D.~London, V.~Page, N.~Sinha and R.~Sinha,
%``Methods for measuring new-physics parameters in B decays,''

\bibitem{phiphi-PQCD}
Y.-H.\, Chen {\it et al.}, Phys. Rev. D {\bf 59}, 074003 (1999).

\bibitem{phiphi-BR}
X.~Q.~Li, G.~R.~Lu and Y.~D.~Yang,
%``Charmless anti-B/s $\to$ V V decays in QCD factorization,''
Phys.\ Rev.\ D {\bf 68}, 114015 (2003)
[Erratum-ibid.\ D {\bf 71}, 019902 (2005)].

%\bibitem{QCDF} M.\,Benneke {\it et al.}, the usual QCDF reference

\bibitem{phiktheory} 
M.\,Beneke and M.\,Neubert,
%``QCD factorization for B $\to$ P P and B $\to$ P V decays,''
Nucl.\ Phys.\ B {\bf 675}, 333 (2003).
%[arXiv:hep-ph/0308039].
%%CITATION = HEP-PH 0308039;%%
%
%A.\ Buras ``anatomy'' arXiv:hep-ph/0402112. ????
%
%A.~K.~Giri and R.~Mohanta,
%``Direct CP violation and new physics effects in the decay mode B+ $\to$ Phi
%K+,''
%Mod.\ Phys.\ Lett.\ A {\bf 19}, 1903 (2004)
%[arXiv:hep-ph/0311011].


\bibitem{pdg2004} 
S.\,Eidelman {\it et al.} [Particle Data Group],
%``Review of particle physics,''
Phys.\ Lett.\ B {\bf 592}, 1 (2004).

\bibitem{charge-conjugate-disclaimer} Charge conjugate decay modes are 
implied throughout this letter unless otherwise stated.

\bibitem{cdf}
% New CDF reference from J/psi cross section paper
D. Acosta et al., Phys. Rev. D71, 032001 (2005).
% old CDF reference
%CDF Collaboration, FERMILAB-PUB-96/390-E (1996).


\bibitem{CDFsystem}
\cdfii uses a cylindrical coordinate system in which $\phi$ is the azimuthal
angle, $r$ is the radius from the nominal beam axis, $y$ points up and $z$
points in the proton beam direction with the origin at the center of the 
detector.The transverse plane is the plane perpendicular to the $z$-axis.

\bibitem{svxii}
A.\,Sill {\it et al.}, Nucl. Instrum. Meth. A {\bf 447}, 1 (2000).
                                                                  
\bibitem{cot}
T.\,Affolder {\it et al.}, Nucl.\ Instrum.\ Meth.\ A {\bf 526}, 249 (2004).
%K.T.\,Pitts {\it et al.}, Nucl.\ Phys. B (Proc. Suppl.) {\bf 61}, 230 (1998).
                                                     
\bibitem{xft}
E.J.\,Thomson {\it et al.}, IEEE Trans. Nucl. Sci. {\bf 49}, 1063 (2002).
 
\bibitem{svt}
%A.\,Bardi {\it et al.},
%%``The CDF online silicon vertex tracker,''
%Nucl.\ Instrum.\ Meth.\ A {\bf 485}, 178 (2002);
%W.\,Ashmanskas {\it et al.}  
%%``Performance of the CDF online silicon vertex tracker,''
%IEEE Trans.\ Nucl.\ Sci.\  {\bf 49}, 1177 (2002);
%W.\,Ashmanskas {\it et al.},
%% Vertex 2001 proceedings
%%``Initial experience with the CDF SVT trigger,''
%Nucl.\ Instrum.\ Meth.\ A {\bf 501}, 201 (2003).
%W.\,Ashmanskas {\it et al.}, Nucl. Instrum. Meth. {\bf A 447}, 218
%(2000);
W.\,Ashmanskas {\it et al.}, 
%``The CDF silicon vertex trigger,''
Nucl.\ Instrum.\ Meth.\ A {\bf 518}, 532 (2004).

\bibitem{Punzi} 
%G.\, Punzi, proceeding of PHYSTAT2003, SLAC Sept 8--11,2003.
G.\, Punzi,
%``Sensitivity of searches for new signals and its optimization,''
eConf {\bf C030908}, MODT002 (2003);
arXiv:physics/0308063.

%\bibitem{geant}
%R.\,Brun, R.\,Hagelberg, M.\,Hansroul, and J.C.\,Lassalle, Reports
%no. CERN-DD-78-2-REV and CERN-DD-78-2. %taken from mass diff. paper.

\bibitem{cdfsim}
E.\,Gerchtein and M.\,Paulini,
%``CDF detector simulation framework and performance,''
eConf {\bf C0303241}, TUMT005 (2003);
arXiv:physics/0306031.

\bibitem{MNR}
M.\,Mangano, P.\,Nason and G.\, Ridolfi, Nucl.\ Phys.\ B {\bf 373}, 295 (1992).

%\bibitem{Belle-phikst}
%K.-F.\,Chen, {\it et al.} Phys. Rev. Let. {\bf 91}, 201801 (2003).

%\bibitem{Extended}
%L.\, Lyons, ``Statistics for Particle and Nuclear Physicists'', Cambridge
%University Press (1986).
%%BABAR Collaboaration, Phys. Rev. Lett.{\bf 87}, 151801 (2001);
%%BABAR Collaboaration, Phys. Rev. {\bf D65}, 051101 (2002).

\bibitem{CDF-psiphiBR} F.\,Abe {\it et al} [CDF Collaboration],
 Phys.\ Rev.\ D {\bf 54}, 6596 (1996).

\bibitem{CDF-psiphiPol}  D.\,Acosta {\it et al.}  [CDF Collaboration],
 %``Measurement of the Lifetime Difference Between B_s Mass Eigenstates,''
 Phys.\ Rev.\ Lett.\  {\bf 94}, 101803 (2005).

\end{thebibliography}
%==============================================================================
\end{document}
%==============================================================================


hep-ex0502044.extracted_bib
\begin{thebibliography}{99}

%\bibitem{Ligeti-ICHEP04} Z.\, Ligeti, Proceedings of the ICHEP04 conference,
%arXiv:hep-ph/0408267.
%, Beijing, August 16-23 Phys. 

\bibitem{Belle-btos-ICHEP04}
K.~Abe {\it et al.}  [BELLE Collaboration],
%``New measurements of time-dependent CP-violating asymmetries in b $\to$ s
%transitions at Belle,''
arXiv:hep-ex/0409049.

\bibitem{Babar-btos-ICHEP04} 
%, Beijing, August 16-23 Phys. 
B.~Aubert {\it et al.}  [BABAR Collaboration],
%``Measurements of CP asymmetries in the decay B $\to$ Phi K,''
arXiv:hep-ex/0408072 and arXiv:hep-ex/0408090.
%B.~Aubert {\it et al.}  [BABAR Collaboration],
%``Measurement of time-dependent CP-violating asymmetries in B0 meson decays to
%eta' K0,''
%%arXiv:hep-ex/0408090.

\bibitem{BVV-theory} 
A.\,S.\, Dighe, I.\, Dunietz and R.\, Fleisher, Eur. Phys. J.
{\bf C6}, 647 (1999);
D.\,Atwood and A.\,Soni,
%``Determining the phases alpha and gamma from direct CP violation in  B/u, B/d
%and B/s decays to two vectors,''
Phys.\ Rev.\ D {\bf 65}, 073018 (2002).
%[arXiv:hep-ph/0106083].

\bibitem{phiphi-Theory}
M.\, Raidal,
%``CP asymmetry in B $\to$ Phi K(S) decays in left-right models and its
%implications on B/s decays,''
Phys.\ Rev.\ Lett.\  {\bf 89}, 231803 (2002);
A.\, Datta {\it et al.}, arXiv:hep-ph/0406192; submitted to Phys.\ Rev.\ D.
%, M.~Imbeault, D.~London, V.~Page, N.~Sinha and R.~Sinha,
%``Methods for measuring new-physics parameters in B decays,''

\bibitem{phiphi-PQCD}
Y.-H.\, Chen {\it et al.}, Phys. Rev. D {\bf 59}, 074003 (1999).

\bibitem{phiphi-BR}
X.~Q.~Li, G.~R.~Lu and Y.~D.~Yang,
%``Charmless anti-B/s $\to$ V V decays in QCD factorization,''
Phys.\ Rev.\ D {\bf 68}, 114015 (2003)
[Erratum-ibid.\ D {\bf 71}, 019902 (2005)].

%\bibitem{QCDF} M.\,Benneke {\it et al.}, the usual QCDF reference

\bibitem{phiktheory} 
M.\,Beneke and M.\,Neubert,
%``QCD factorization for B $\to$ P P and B $\to$ P V decays,''
Nucl.\ Phys.\ B {\bf 675}, 333 (2003).
%[arXiv:hep-ph/0308039].
%%CITATION = HEP-PH 0308039;%%
%
%A.\ Buras ``anatomy'' arXiv:hep-ph/0402112. ????
%
%A.~K.~Giri and R.~Mohanta,
%``Direct CP violation and new physics effects in the decay mode B+ $\to$ Phi
%K+,''
%Mod.\ Phys.\ Lett.\ A {\bf 19}, 1903 (2004)
%[arXiv:hep-ph/0311011].


\bibitem{pdg2004} 
S.\,Eidelman {\it et al.} [Particle Data Group],
%``Review of particle physics,''
Phys.\ Lett.\ B {\bf 592}, 1 (2004).

\bibitem{charge-conjugate-disclaimer} Charge conjugate decay modes are 
implied throughout this letter unless otherwise stated.

\bibitem{cdf}
% New CDF reference from J/psi cross section paper
D. Acosta et al., Phys. Rev. D71, 032001 (2005).
% old CDF reference
%CDF Collaboration, FERMILAB-PUB-96/390-E (1996).


\bibitem{CDFsystem}
\cdfii uses a cylindrical coordinate system in which $\phi$ is the azimuthal
angle, $r$ is the radius from the nominal beam axis, $y$ points up and $z$
points in the proton beam direction with the origin at the center of the 
detector.The transverse plane is the plane perpendicular to the $z$-axis.

\bibitem{svxii}
A.\,Sill {\it et al.}, Nucl. Instrum. Meth. A {\bf 447}, 1 (2000).
                                                                  
\bibitem{cot}
T.\,Affolder {\it et al.}, Nucl.\ Instrum.\ Meth.\ A {\bf 526}, 249 (2004).
%K.T.\,Pitts {\it et al.}, Nucl.\ Phys. B (Proc. Suppl.) {\bf 61}, 230 (1998).
                                                     
\bibitem{xft}
E.J.\,Thomson {\it et al.}, IEEE Trans. Nucl. Sci. {\bf 49}, 1063 (2002).
 
\bibitem{svt}
%A.\,Bardi {\it et al.},
%%``The CDF online silicon vertex tracker,''
%Nucl.\ Instrum.\ Meth.\ A {\bf 485}, 178 (2002);
%W.\,Ashmanskas {\it et al.}  
%%``Performance of the CDF online silicon vertex tracker,''
%IEEE Trans.\ Nucl.\ Sci.\  {\bf 49}, 1177 (2002);
%W.\,Ashmanskas {\it et al.},
%% Vertex 2001 proceedings
%%``Initial experience with the CDF SVT trigger,''
%Nucl.\ Instrum.\ Meth.\ A {\bf 501}, 201 (2003).
%W.\,Ashmanskas {\it et al.}, Nucl. Instrum. Meth. {\bf A 447}, 218
%(2000);
W.\,Ashmanskas {\it et al.}, 
%``The CDF silicon vertex trigger,''
Nucl.\ Instrum.\ Meth.\ A {\bf 518}, 532 (2004).

\bibitem{Punzi} 
%G.\, Punzi, proceeding of PHYSTAT2003, SLAC Sept 8--11,2003.
G.\, Punzi,
%``Sensitivity of searches for new signals and its optimization,''
eConf {\bf C030908}, MODT002 (2003);
arXiv:physics/0308063.

%\bibitem{geant}
%R.\,Brun, R.\,Hagelberg, M.\,Hansroul, and J.C.\,Lassalle, Reports
%no. CERN-DD-78-2-REV and CERN-DD-78-2. %taken from mass diff. paper.

\bibitem{cdfsim}
E.\,Gerchtein and M.\,Paulini,
%``CDF detector simulation framework and performance,''
eConf {\bf C0303241}, TUMT005 (2003);
arXiv:physics/0306031.

\bibitem{MNR}
M.\,Mangano, P.\,Nason and G.\, Ridolfi, Nucl.\ Phys.\ B {\bf 373}, 295 (1992).

%\bibitem{Belle-phikst}
%K.-F.\,Chen, {\it et al.} Phys. Rev. Let. {\bf 91}, 201801 (2003).

%\bibitem{Extended}
%L.\, Lyons, ``Statistics for Particle and Nuclear Physicists'', Cambridge
%University Press (1986).
%%BABAR Collaboaration, Phys. Rev. Lett.{\bf 87}, 151801 (2001);
%%BABAR Collaboaration, Phys. Rev. {\bf D65}, 051101 (2002).

\bibitem{CDF-psiphiBR} F.\,Abe {\it et al} [CDF Collaboration],
 Phys.\ Rev.\ D {\bf 54}, 6596 (1996).

\bibitem{CDF-psiphiPol}  D.\,Acosta {\it et al.}  [CDF Collaboration],
 %``Measurement of the Lifetime Difference Between B_s Mass Eigenstates,''
 Phys.\ Rev.\ Lett.\  {\bf 94}, 101803 (2005).

\end{thebibliography}