Search for New Physics in Photon-Lepton Events in $p{\bar p}$ Collisions at $\roots= 1.8\TeV$
D.~Acosta
We present the results of a search in $p{\bar p}$ collisions at $\roots= 1.8\TeV$ for anomalous production of events containing a photon and a lepton ($e$ or $\mu$), both with large transverse energy, using 86 pb$^{-1}$ of data collected with the Collider Detector at Fermilab during the 1994-95 collider run at the Fermilab Tevatron. The presence of large missing transverse energy ($\mett$), additional photons, or additional leptons in these events is also analyzed. The results are consistent with standard model expectations, with the possible exception of photon-lepton events with large $\mett$, for which the observed total is 16 events and the expected mean total is $7.6\pm0.7$ events.
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%CDF note 5819 Dec. 21, 2001 HJF
%updated in response to collab comments: Jan. 18, 2002 HJF
%updated in response to referee A May 14, 2002 HJF
%updated in response to PRL request for shortening June 9, 2002 HJF
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\begin{document}


\preprint{FERMILAB-PUB-02/031-E}
\preprint{EFI-02-66}


\title{Search for New Physics in Photon-Lepton Events in $p{\bar p}$
Collisions at $\roots= 1.8\TeV$}

%\begin{center}
%{\bf\large
%  {Search for New Physics in Photon-Lepton Events in $p{\bar p}$
%  Collisions at $\roots= 1.8\TeV$}
%}
%\end{center}

%\input{cdf_auth.tex}
\input{run1_revtex4_auth.tex}
\date{\today}

\begin{abstract}
We present the results of a search in $p{\bar p}$ collisions at
$\roots= 1.8\TeV$ for anomalous production of events containing a
photon and a lepton ($e$ or $\mu$), both with
large transverse energy, using 86 pb$^{-1}$ of data collected with the
Collider Detector at Fermilab during the 1994-95 collider run at the
Fermilab Tevatron.  The presence of large missing transverse energy
($\mett$), additional photons, or additional leptons in these events
is also analyzed.  The results are consistent with standard model
expectations, with the possible exception of photon-lepton events with
large $\mett$, for which the observed total is 16 events and the
expected mean total is $7.6\pm0.7$ events.
\end{abstract}

\pacs{13.85.Rm, 12.60.Jv, 13.85.Qk, 14.80.Ly}
% PACS, the Physics and Astronomy Classification Scheme.

\maketitle

An important test of the standard model (SM) of particle
physics~\cite{SM} is to measure and understand the properties of the
highest-energy particle collisions.  The observation of an anomalous
production rate of any combination of the fundamental particles 
of the SM would be a clear indication of a new physical
process.  This Letter summarizes an analysis of the inclusive
production of a photon and a lepton ($e$ or $\mu +\gamma + X$),
including searches for additional
photons, leptons, and large missing transverse energy, using
86~pb$^{-1}$ of data from proton-antiproton collisions collected with
the Collider Detector at Fermilab (CDF) during the 1994-95 run of the
Fermilab Tevatron~\cite{jeffPRD}.

Production of these particular combinations of particles is of
interest for several reasons.  Events with photons and leptons are
potentially related to the puzzling ``$ee\gamma\gamma\mett$'' event
recorded by CDF~\cite{eegg}.  A supersymmetric model~\cite{susy}
designed to explain the $ee\gamma\gamma\mett$ event predicts the
production of photons from the radiative decay of the
$\tilde{\chi}^{0}_{2}$ neutralino, and leptons through the decay of
charginos, indicating $\ell\gamma\mett$ events as a signal for the
production of a chargino-neutralino pair.  Other hypothetical, massive
particles could subsequently decay to SM electroweak gauge bosons, one
of which could be a photon and the other a $W$ or $Z^0$ boson that
decays leptonically.  In addition, photon-lepton studies complement
similarly-motivated inclusive searches for new physics in
diphoton~\cite{gg}, photon-jet~\cite{gj}, and photon-$b$-quark
events~\cite{gb}.


The CDF detector~\cite{cdfblurb} is a cylindrically symmetric
spectrometer designed to study $\pbarp$ collisions at the Fermilab
Tevatron.  A superconducting solenoid of length 4.8~m and radius 1.5~m
generates a magnetic field of 1.4~T and contains tracking chambers
used to measure the momenta of charged particles.  A set of vertex
time projection chambers is used to find the $z$
position~\cite{CDFcoo} of the $\pbarp$ interaction. The 3.5-m-long
central tracking chamber (CTC) is a wire drift chamber which provides
up to 84 measurements between the radii of 31.0~cm and 132.5~cm in the
region $|\eta| < 1.0$.  Sampling calorimeters, used to measure the
electromagnetic and hadronic energy deposited by electrons, photons,
and jets of hadrons, surround the solenoid. 
Each tower of
the central ($|\eta| < 1.1$) electromagnetic calorimeter (CEM) has
an embedded strip chamber for the measurement of
the 2-D transverse profile of electromagnetic showers.
Muons are detected with three systems of muon chambers, each
consisting of four layers of drift chambers.  The central muon
(CMU) system is located directly outside the central
hadronic calorimeter, and covers $|\eta| < 0.6$.  Outside of the CMU
is 0.6~m of steel shielding, followed by the central muon
upgrade system.  The central muon extension  system
provides muon detection for $0.6<|\eta|<1.0$.
      

Events with a high-transverse momentum ($\Pt$)~\cite{EtPt} photon or
lepton are selected by a three-level trigger~\cite{jeffPRD}, which
requires an event to have either a high-$\Et$ photon or a
high-$\Pt$ lepton ($e$ or $\mu$) within the central region, $|\eta| <
1.0$. Photon and electron candidates are chosen from clusters of
energy in adjacent CEM towers; electrons are then further separated
from photons by requiring the presence of a CTC track pointing at the
cluster. Muons are identified by requiring CTC tracks to extrapolate
to a reconstructed track segment in the muon drift chambers.


% isolation 
To reduce background from
the decays of hadrons produced in jets, both the photon and the lepton
in each event are required to be `isolated'. The $\Et$
deposited in the calorimeters in a cone in $\eta-\phi$ space of radius
$R=0.4$ around the photon or lepton position is summed, and the $\Et$
due to the photon or lepton is subtracted.  The remaining $\Et$ 
in the cone, $\coriso$, is required to be less than 2\GeV for a
photon, or less than 10\% of the lepton transverse momentum.  In
addition, for photons the sum of the $\Pt$ of all
tracks in the cone must be less than 5\GeV.


Inclusive photon-lepton events are selected by requiring
an isolated central photon with $\Etgamma>25$ GeV and an isolated
central lepton ($e$ or $\mu$) with $\Etlepton>25$ GeV. The
technical criteria used to identify leptons and photons are very
similar to those of Refs.~\cite{gg,gj,gb}, and are described in detail
in Ref.~\cite{jeffPRD}. 
A total of 77 events pass this selection: 29
photon-muon and 48 photon-electron candidates.


The production of pairs of new heavy states that decay via cascade decays
can lead to final states with multiple
photons or leptons; in contrast, the dominant SM background processes
lead to signatures with  only one photon and one lepton observed in
the detector, as discussed in detail below.
The inclusive sample is consequently analyzed as two subsamples: a
``two-body inclusive photon-lepton sample'' typical of a two-particle
final state, and a ``multi-body inclusive photon-lepton sample''
typical of three or more particles in the final state.  The two-body
sample selection requires exactly one photon and exactly one lepton,
with an azimuthal separation $\Delta
\varphi_{\ell\gamma}> 150^{\circ}$, but  excludes 
those events for which the invariant mass of the photon and electron,
$M_{e\gamma}$, is within 5\GeV of the mass of the Z boson, $M_Z$ (these events are used as a
control sample, as described below).  The multi-body sample is
composed of the remaining inclusive photon-lepton events.  The
multi-body sample is then further analyzed for the presence of large
$\mett$, and additional isolated leptons and photons.  The $\mett$ threshold of
25\GeV was determined \textit{a priori} in previous
analyses~\cite{r_papers} as a significant indicator of a neutrino
arising from leptonic decays of the $W$ boson. Figure~\ref{lgamma
path} shows the breakdown of the inclusive sample into the final
categories.

\begin{figure}[!ht]
\begin{center}
\includegraphics*[width=0.5\textwidth]{figure1.eps}
\end{center}
\caption{The subsets of 
inclusive photon-lepton events.  The multi-body photon-lepton
subcategories of $\ell\gamma\mett$, multi-lepton, and multi-photon
events are not mutually exclusive.}
\label{lgamma path}
\end{figure}
        


The dominant source of photon-lepton events at the Tevatron is
electroweak diboson production, in which a $W$ or $Z^0$ boson decays
leptonically ($\ell \nu$ or $\ell\ell$) and a photon is radiated from
either an initial-state quark, a $W$, or a charged final-state lepton.
The number of such events is estimated using leading-order (LO) matrix
element calculations~\cite{diboson matrix} for which the computational
code~\cite{diboson mc} was then embedded into the general-purpose
event generator program \textsc{pythia}~\cite{pythia}, followed by a
full simulation of the detector.  The uncertainty in this number has
roughly equal contributions from higher-order processes, simulation
systematics, luminosity, proton structure, and generator statistics.


A jet can contain mesons such
as the $\pi^0$ or $\eta$ that decay to photons, which then
may satisfy the photon selection criteria.  The number of
lepton-plus-misidentified-jet events is determined by counting the
number of jets in a sample of events with a lepton 
and then multiplying by the probability
of a jet being misidentified as a photon, $P^{jet}_{\gamma}$.  The
factor $P^{jet}_{\gamma}$ is determined from samples of jets and
photons in events with a lepton trigger, using the distribution in
$\coriso$.  By fitting to a sum of the expected distribution for
prompt photons and that measured for jets,
the misidentification rate is found to be
$P^{jet}_{\gamma}=(3.8\pm0.7)\times10^{-4}$~\cite{jeffPRD}.

The dominant source of misidentified photon-electron events is
$Z^{0}\rightarrow e^+e^-$ production, where one of the electrons
undergoes hard photon bremsstrahlung or a track fails to be
reconstructed.  We assume that photon-electron events consistent with
$Z^{0}$ production are not a significant source of new physics, and
use them to estimate the probability $P^{e}_{\gamma}$ that an electron
is reconstructed as a photon. The number of misidentified
photon-electron events in the control sample
divided by the number of electron-electron events with the same
kinematics gives $P^{e}_{\gamma}= (1.28\pm0.35)$\%.
For any other subset of central electron pairs, the contribution to
the corresponding photon-electron sample is the product of
$P^{e}_{\gamma}$ and the number of central electron pairs.

Other, smaller, backgrounds are due to hadrons faking muons, and to
leptons from the decay of bottom and charm quarks.  Charged hadrons 
may penetrate the
calorimeters into the muon chambers, or may decay to a muon
before reaching the calorimeters.  These contributions are determined
by identifying isolated, high-momentum tracks in the inclusive photon
sample, applying the probability of each track of being misidentified
as a muon, and summing this probability over all tracks in the
sample~\cite{jeffPRD}.  The contribution to photon-lepton candidates
from heavy-flavor produced in association with a prompt photon is
estimated using Monte Carlo event generation~\cite{pythia} and
detector simulation, and found to be negligible.

New physics in small samples of events would most likely manifest
itself as an excess of observed events over expected events.  
The significance of an
observed excess is computed from the likelihood of obtaining at least the
observed number of events, $N_{0}$, assuming that the null hypothesis
(the SM) is correct.  The ``observation likelihood'', $P(N\geq
N_{0}|\mu_{SM})$, is defined as the fraction of the Poisson
distribution for the number of expected events from SM sources, with a
mean $\mu_{SM}$, that yields outcomes $N \ge N_{0}$~\cite{delta_mu}. 
The likelihood $P(N\geq N_{0}|\mu_{SM})$
is computed from a large ensemble of calculations in which each
quantity used to compute photon-lepton event sources varies randomly
as a Gaussian distribution, and the resulting mean event total is used
to randomly generate a Poisson-distributed outcome $N$.  The fraction
of calculations in the ensemble with outcomes $N \geq N_{0}$ gives
$P(N\geq N_{0}|\mu_{SM})$.


The predicted and observed totals for two-body photon-lepton events
are compared in Table~\ref{lg result}.  Half of the predicted total
originates from $Z^{0}\gamma$ production where one of the charged
leptons has escaped identification; the other half originates from
roughly equal contributions of $W\gamma$ production, misidentified
jets, misidentified electrons, and misidentified charged hadrons.  The
likelihood of the observed total is 9.3\%.
 
\begin{table}[!t]
\begin{center}
\begin{tabular}{lrrrr}\hline\hline
Process & 
\multicolumn{1}{c}{Two-Body} & 
\multicolumn{3}{c}{Multi-Body} \\
& 
\multicolumn{1}{c}{$\ell\gamma X$} & 
\multicolumn{1}{c}{$\ell\gamma X$} & 
\multicolumn{1}{c}{$\ell\gamma\mett X$} &
\multicolumn{1}{c}{$\ell\ell\gamma X$} 
\\ \hline
W$+\gamma$& 
$2.7\pm0.3$ & $5.0\pm0.6$ & $3.9\pm0.5$&\multicolumn{1}{c}{--} \\
Z$+\gamma$&
$12.5\pm1.2$ & $9.6\pm0.9$ &$1.3\pm0.2$& $5.5\pm0.6$\\ 
$\ell$+jet, jet $\rightarrow \gamma$ &
$3.3\pm0.7$ & $3.2\pm0.6$ &$2.1\pm0.4$& $0.3\pm0.1$\\ 
$Z \rightarrow ee, e \rightarrow \gamma$  &
$4.1\pm1.1$ & $1.7\pm0.5$  &$0.1\pm0.1$&\multicolumn{1}{c}{--} \\ 
Hadron$+\gamma$ &
$1.4\pm0.7$ &$0.5\pm0.3$ & $0.2\pm0.1$&\multicolumn{1}{c}{--} \\ 
$\pi/K$ Decay$+\gamma$ &
$0.8\pm0.9$ &$0.3\pm0.3$ & $0.1\pm0.1$& \multicolumn{1}{c}{--}\\ 
$b/c$ \  \ Decay$+\gamma$   & 
$0.1\pm0.1$ & $\lt 0.01$  &$\lt 0.01$ & \multicolumn{1}{c}{--}\\ 
\hline
Predicted $\mu_{SM}$ &
$24.9\pm2.4$ & $20.2\pm1.7$ & $7.6\pm0.7$& $5.8\pm0.6$\\  
Observed $N_0$& 
\multicolumn{1}{c}{33} &      
\multicolumn{1}{c}{27} &      
\multicolumn{1}{c}{16} &      
\multicolumn{1}{c}{5} 
\\ 
$P(N\geq N_{0}|\mu_{SM})$ & 
\multicolumn{1}{c}{9.3\%} & 
\multicolumn{1}{c}{10.0\%} & 
\multicolumn{1}{c}{0.7\%} & 
\multicolumn{1}{c}{68.0\%}   
\\ 
\hline\hline
\end{tabular}
\end{center}
\caption{The mean numbers $\mu_{SM}$ of two-body and inclusive multi-body
events predicted by the SM, the number $N_0$ observed, and the
observation likelihood $P(N\geq N_{0}|\mu_{SM})$.  Correlated
uncertainties have been taken into account.}
\label{lg result}
\end{table}

The predicted and observed totals for inclusive multi-body
photon-lepton events are also compared in Table~\ref{lg result}.
About half of the predicted total originates from $Z^{0}\gamma$
production, a quarter from $W\gamma$ production, and the remaining
quarter from particles misidentified as photons or leptons.  The
likelihood of the observed inclusive multi-body total
is 10\%.  The predicted and observed kinematic distributions for these
events are compared in Figure~\ref{mblg result}.  The difference
between the observed and predicted totals can be entirely attributed
to events with $\mett \gt 25\GeV$.  Figure~\ref{mblg result} also
shows the distribution in $\Ht$, the scalar sum of the $\Et$ of all
objects in the event plus the magnitude of $\mett$, a variable
correlated with the production of massive particles~\cite{jeffPRD}.


\begin{figure*}[!t]
\begin{minipage}[c]{0.5\textwidth}
\includegraphics[width=\textwidth]{figure3.eps}
\end{minipage}%
\begin{minipage}[c]{0.5\textwidth}
\includegraphics[width=\textwidth]{figure4.eps}
\end{minipage}
\caption{  
Left: The lepton $\Et$, photon $\Et$, $\mett$, and $\Ht$ of inclusive
multi-body photon-lepton candidates (points) compared to SM 
predictions (single-hatched histograms).  
The cross-hatched histograms show the contribution from SM $W\gamma$
and $Z\gamma$ production. There is one event in the overflow bin 
at 114 GeV in $a$) and one at 193 GeV in $b$). 
Right: The same distributions for the
subset of these events that have $\mett \gt 25\GeV$.}
\label{mblg result}
\end{figure*}

The predicted and observed totals for multi-body $\ell\gamma\mett$
events are also compared in Table~\ref{lg result}.  For photon-electron
events, requiring $\mett \gt 25\GeV$ suppresses the contributions from
$Z^{0}\gamma$ production and from electrons misidentified as photons,
which have no intrinsic $\mett$, while preserving the contribution
from $W\gamma$ production.  As a result, 57\% of the predicted
$e\gamma\mett$ total arises from $W\gamma$ production, 31\% from jets
misidentified as photons, only 3\% from $Z^{0}\gamma$ production, and
the remaining 9\% from other particles misidentified as photons.  The
observed $e\gamma\mett$ total agrees with the predicted total, with a
25\% probability that the predicted mean of $3.4$ events yields
5 observed events. One of these 5 is the $ee\gamma\gamma\mett$ 
event~\cite{eegg}.

For photon-muon events, requiring $\mett \gt 25\GeV$ does not
completely eliminate the contribution from $Z^{0}\gamma$, for a
second muon with $|\eta| \gt 1.2$ and $\Pt \gt 25\GeV$ can escape 
detection and induce the necessary amount of $\mett$.
The rate at which this occurs is modeled well by the $Z^{0}\gamma$ event
simulation, however, since it is largely a function of the CDF detector
geometric acceptance.  Of the 4.6 multi-body 
events predicted to originate from $Z^{0}\gamma$ production, 2.2
events are predicted to contain a second visible muon, 1.0 events 
are predicted to have less than 25\GeV of $\mett$,  
and only 1.0 events are predicted to pass the 25\GeV $\mett$ selection.
One event is observed with a second 
muon, in agreement with the $Z^{0}\gamma$ prediction. 
The predicted total for multi-body $\mu\gamma\mett$ events consists
of 47\% $W\gamma$ production, 24\% events with jets misidentified as
photons, 23\% $Z^{0}\gamma$ production, and the remaining 7\% from
particles misidentified as muons.    
 
The $\mu\gamma\mett$ event total is higher than predicted (11
observed vs. 4 expected), with an observation likelihood of 
0.54\%; the observation likelihood of the $\ell\gamma\mett$ total
is only slightly higher at 0.72\%~\cite{e_mu_diff}.
The predicted and observed distributions of the kinematic properties
of multi-body $\ell\gamma\mett$ events are compared in
Figure~\ref{mblg result}.  The observed photon $\Et$,
lepton $\Et$, $\mett$, and $\Ht$ distributions are within the range
expected from the SM~\cite{referee_motivation}. 


The predicted and observed totals of multi-lepton
events are compared in Table~\ref{lg result}.  Nearly all 
of the predicted total is expected from $Z^{0}\gamma$ production.
Approximately 6 events are expected; 5 events are observed,
including the $ee\gamma\gamma\mett$ event. 
No $e\mu\gamma$ events were expected, and none were observed.

The predicted number of multi-photon events is dominated by
$Z\gamma$ production, for which only  0.01 events
are expected. The single event
observed is the $ee\gamma\gamma\mett$ event, whose (un)likelihood is
described in Ref.~\cite{eegg}.

In conclusion, we have made an \textit{a priori} search for inclusive
photon+lepton production. We find that subsamples of this data set
agree well with their SM prediction, with the possible exception of
$\gamma\ell\mett$. However, an excess of events with 0.7\%
likelihood (equivalent to 2.7 standard deviations for a Gaussian
distribution) in one subsample among the five studied is an
interesting result, but is not a compelling observation of new
physics.  We look forward to more data in the upcoming run of the
Fermilab Tevatron.


\begin{acknowledgments}
We thank the Fermilab staff and the technical staffs of the
participating institutions for their contributions.  We thank U.~Baur
and S.~Mrenna for their critical calculations of the SM $W\gamma$ and
$Z\gamma$ backgrounds used in this analysis.  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
fuer Bildung und Forschung, Germany; the Korea Science and Engineering
Foundation (KoSEF); the Korea Research Foundation; and the Comision
Interministerial de Ciencia y Tecnologia, Spain.
                                                                  
\end{acknowledgments}

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% introduction.tex

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\bibitem{jeffPRD}  A longer description of this analysis is available in
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\bibitem{eegg}
% CDF diphoton plus met PRD
F.~Abe \textit{et al.}, Phys. Rev. D \textbf{59}, 092002 (1999); see
also
D.~Toback, Ph.D. thesis, University of Chicago, 1997.
\bibitem{susy} See, for example,
S.~Ambrosanio, G.~L.~Kane, G.~D.~Kribs, S.~P.~Martin, and S.~Mrenna,
Phys. Rev. D \textbf{55}, 1372 (1997);
 for a recent (post Ref. 2) interpretation see: B.C. Allanach, S. Lola,
 K. Sridhar, CERN-TH-2001-360.

% G.~L.~Kane and S.~Mrenna,
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%Phys. Rev. D \textbf{55}, 1372 (1997). 

%%%%%\bibitem{gg} See, for example:
%SEARCH FOR GAUGE MEDIATED SUSY BREAKING
%TOPOLOGIES AT S**(1/2) SIMILAR TO 189-GEV.
%R. Barate \textit{et al.}, Eur. Phys. J. C \textbf{16} 71, (2000);
% D0 higgs search
%%%%%%B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{82}, 2244 (1999);
% D0 gmsb limits
%%%%%B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{80}, 442 (1998);
% D0 monopole search
%B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{81}, 524 (1998);
% CDF diphoton plus met PRL
%%%%%F.~Abe \textit{et al.}, Phys. Rev. Lett \textbf{81}, 1791 (1998);
% CDF PJW diphoton analysis
%P.~J.~Wilson, in \textit{ICHEP 98}, Proceedings of the 
%29th International Conference in High-energy Physics, 
%Vancouver, Canada, 1998, edited by 
%A.~Astbury, D.~Axen and J.~Robinson (World Scientific, Singapore, 1998); 
% D0 diphoton plus met
%%%%S.~Abachi \textit{et al.}, Phys. Rev. Lett. \textbf{78}, 2070 (1997);
%SEARCH FOR ANOMALOUS PRODUCTION OF HIGH MASS PHOTON PAIRS IN E+ E-
%COLLISIONS AT LEP.
%%%%%%P.D. Acton \textit{et al.}, Phys. Lett. \textbf{B311} 391, (1993).


\bibitem{gg}
% CDF PJW diphoton analysis
T.~Affolder \textit{et al.}, Phys. Rev. D \textbf{64}, 092002 (2001);
% CDF diphoton plus met PRL
F.~Abe \textit{et al.}, Phys. Rev. Lett \textbf{81}, 1791 (1998). See
also:
% L3 quartic couplings
P.~Achard \textit{et al.}, Phys. Lett. \textbf{B527} 29, (2002);
% OPAL generic photon searches
G.~Abbiendi \textit{et al.}, Eur. Phys. J. C \textbf{18} 253, (2000);
% DELPHI SUSY
P.~Abreu \textit{et al.}, Eur. Phys. J. C \textbf{17} 53, (2000);
% ALEPH SUSY
R. Barate \textit{et al.}, Eur. Phys. J. C \textbf{16} 71, (2000);
% D0 higgs search
B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{82}, 2244 (1999);
% D0 monopole search
B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{81}, 524 (1998);
% D0 gmsb limits
B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{80}, 442 (1998);
% D0 diphoton plus met
S.~Abachi \textit{et al.}, Phys. Rev. Lett. \textbf{78}, 2070 (1997);
\bibitem{gj} 
% D0 photon plus jets plus met
B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{82}, 29 (1999);
% D0 Sleuth: 
For a next-generation signature-based search, see:
B.~Abbott  \textit{et al.}, Phys.Rev.D64:012004, 2001.

\bibitem{gb}
% CDF photon bb technicolor search
F.~Abe \textit{et al.}, Phys. Rev. Lett \textbf{83}, 3124 (1999).

\bibitem{cdfblurb} A detailed description can be found in
F. Abe \textit{et al.}, Nucl. Instrum. Methods Phys. Res.,
Sect.~A \textbf{271}, 387 (1988).  

\bibitem{CDFcoo}  The CDF coordinate system of 
$r$, $\varphi$, and $z$ is cylindrical, with the $z$-axis along the
proton beam.  The pseudorapidity is $\eta = -\ln(\tan(\theta/2))$. 

\bibitem{EtPt} The transverse momentum is defined as $\Pt =
p\sin\theta$; the transverse energy is defined as $\Et = E\sin\theta$.
Missing transverse energy is defined as the vector opposite to the
vector sum of the transverse energies of all objects in an event,
$\vec{{\rm \not\! E}_{\rm T}} = -\Sigma\vec{\Et}$. We use the 
convention that `momentum' refers to $pc$ and `mass' to $mc^2$, so that energy,
momentum, and mass are all measured in GeV.

%\bibitem{Drell-Yan} 
%F.~Abe \textit{et al.}, Phys. Rev. D \textbf{59}, 052002 (1999).

%\bibitem{CFT} 
%G.~W.~Foster \textit{et al.}, 
%Nucl. Instrum. Methods Phys. Res. A \textbf{268}, 33 (1988).

%selection.tex

\bibitem{cdf lepton id}
%top mass prd
T.~Affolder \textit{et al.}, Phys. Rev. D \textbf{63}, 032003 (2001);
%top evidence
F.~Abe \textit{et al.}, Phys. Rev. D \textbf{50}, 2966 (1994).

%\bibitem{W mass}
% W mass PRD
%T.~Affolder \textit{et al.}, Phys. Rev. D \textbf{64}, 052001 (2001);
% W mass 1a
%F.~Abe \textit{et al.}, Phys. Rev. D \textbf{52}, 4784 (1995).

%\bibitem{trigger tower} Trigger towers subtend 0.2 in $\eta$ by 
%$15^{\circ}$ in $\varphi$.

\bibitem{jwb thesis}
J.~Berryhill, Ph.D. thesis, University of Chicago, 2000.

%\bibitem{mk thesis}
%M.~Kruse, Ph.D. thesis, Purdue University, 1996.

\bibitem{r_papers}
F.~Abe \textit{et al.}, Phys. Rev. D \textbf{52}, 2624 (1995).

\bibitem{jet id}
F.~Abe \textit{et al.}, Phys. Rev. D \textbf{45}, 1448 (1992).

\bibitem{diboson matrix}
U.~Baur and E.~L.~Berger, Phys. Rev. D \textbf{47}, 4889 (1993);
\textbf{41}, 1476 (1990).

\bibitem{diboson mc} U.~Baur and S.~Mrenna, private communication.
%The source code is available publicly at  
%\url{http://moose.ucdavis.edu/mrenna/code}.

\bibitem{pythia}
T.~Sjostrand, Computer Physics Commun. \textbf{82} (1994) 74;
S.~Mrenna, Computer Physics Commun. \textbf{101} (1997) 232.
 
%\bibitem{K factor} 
%U. Baur, T. Han, and J. Ohnemus,
%Phys. Rev. D \textbf{57} (1998) 2823 and references therein.
%U. Baur, T. Han, and J. Ohnemus,
%Phys. Rev. D \textbf{48} (1993) 5140; 
%J. Ohnemus,
%Phys. Rev. D \textbf{47} (1993) 940.

\bibitem{delta_mu}
The uncertainty in $\mu_{SM}$ is the standard deviation of a
large ensemble of calculations, and takes into account correlated
uncertainties.
         
\bibitem{e_mu_diff} The observed
muon-electron difference is statistically insignificant; the probability
that 16 events divide up into two categories 
as asymmetrically as 11 to 5 or higher is greater than 8\%. 

\bibitem{referee_motivation} Although the single distributions are not
statistically in conflict with the SM, several events have unusual
topologies. One of the 16 events is the
$ee\gamma\gamma\mett$ event~\cite{eegg}; the inclusive sample also
includes a candidate
$Z^0 +\gamma$ event with an invariant mass of 400 GeV~\cite{jwb
thesis} and a candidate $\mu\mu\gamma\gamma+$jets event~\cite{eegg}.  We
await higher statistics in Run II.



\end{thebibliography}

\end{document}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
	End of document- s
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%





run1_revtex4_auth.tex

%\input{run1_revtex4_auth.tex}
%
%Feb 20, 2002
% modified by removing Paolo Gerkomini and fixing Krutelyov HJF March 17, 02
%
% Inst 1
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, 
Republic of China}
% Inst 2
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439}
% Inst 3
\affiliation{Istituto Nazionale di Fisica Nucleare, University of Bologna,
I-40127 Bologna, Italy}
% Inst 4
\affiliation{Brandeis University, Waltham, Massachusetts 02254}
% Inst 5
\affiliation{University of California at Davis, Davis, California  95616}
% Inst 6
\affiliation{University of California at Los Angeles, Los 
Angeles, California  90024} 
% Inst 7
\affiliation{Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 
39005 Santander, Spain}
% Inst 8
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15218} 
% Inst 9
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, 
Illinois 60637}
% Inst 10
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}
% Inst 11
\affiliation{Duke University, Durham, North Carolina  27708} 
% Inst 12
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 
60510}
% Inst 13
\affiliation{University of Florida, Gainesville, Florida 32611}
% Inst 14
\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica
               Nucleare, I-00044 Frascati, Italy}
% Inst 15
\affiliation{University of Geneva, CH-1211 Geneva 4, Switzerland} 
% Inst 16
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom}
% Inst 17
\affiliation{Harvard University, Cambridge, Massachusetts 02138} 
% Inst 18
\affiliation{Hiroshima University, Higashi-Hiroshima 724, Japan}
% Inst 19
\affiliation{University of Illinois, Urbana, Illinois 61801}
% Inst 20
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218}
% Inst 21
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, 
Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}
% Inst 22
\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}
% Inst 23
\affiliation{High Energy Accelerator Research Organization (KEK), Tsukuba, 
Ibaraki 305, Japan}
% Inst 24
\affiliation{Ernest Orlando Lawrence Berkeley National Laboratory, 
Berkeley, California 94720}
% Inst 25
\affiliation{Massachusetts Institute of Technology, Cambridge,
Massachusetts  02139} 
% Inst 26
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}
% Inst 27
\affiliation{Michigan State University, East Lansing, Michigan  48824}
% Inst 28
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131} 
% Inst 29
\affiliation{Northwestern University, Evanston, Illinois  60208} 
% Inst 30
\affiliation{The Ohio State University, Columbus, Ohio  43210}
% Inst 31
\affiliation{Osaka City University, Osaka 588, Japan} 
% Inst 32
\affiliation{University of Oxford, Oxford OX1 3RH, United Kingdom} 
% Inst 33
\affiliation{Universita di Padova, Istituto Nazionale di Fisica 
          Nucleare, Sezione di Padova, I-35131 Padova, Italy}
% Inst 34
\affiliation{University of Pennsylvania, Philadelphia, 
        Pennsylvania 19104}
% Inst 35
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 
% Inst 36
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260} 
% Inst 37
\affiliation{Purdue University, West Lafayette, Indiana 47907}
% Inst 38
\affiliation{University of Rochester, Rochester, New York 14627}
% Inst 39
\affiliation{Rockefeller University, New York, New York 10021}
% Inst 40
\affiliation{Rutgers University, Piscataway, New Jersey 08855}
% Inst 41
\affiliation{Texas A\&M University, College Station, Texas 77843}
% Inst 42
\affiliation{Texas Tech University, Lubbock, Texas 79409}
% Inst 43
\affiliation{Institute of Particle Physics, University of Toronto, Toronto
M5S 1A7, Canada}
% Inst 44
\affiliation{Istituto Nazionale di Fisica Nucleare, University of 
Trieste/Udine, Italy}
% Inst 45
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}
% Inst 46
\affiliation{Tufts University, Medford, Massachusetts 02155}
% Inst 47
\affiliation{Waseda University, Tokyo 169, Japan}
% Inst 48
\affiliation{University of Wisconsin, Madison, Wisconsin 53706}
% Inst 49
\affiliation{Yale University, New Haven, Connecticut 06520}

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

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

\author{H.~Akimoto}
\affiliation{Waseda University, Tokyo 169, Japan}

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

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

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

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

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

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

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

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

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

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

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

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

\author{N.~Bacchetta}
\affiliation{Universita di Padova, Istituto Nazionale di Fisica 
          Nucleare, Sezione di Padova, 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{S.~Bailey}
\affiliation{Harvard University, Cambridge, Massachusetts 02138} 

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

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

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

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

\author{F.~Bedeschi}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

\author{W.~H.~Bell}
\affiliation{Glasgow University, Glasgow G12 8QQ, United Kingdom}

\author{G.~Bellettini}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

\author{J.~Bensinger}
\affiliation{Brandeis University, Waltham, Massachusetts 02254}

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

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

\author{J.~Berryhill}
%\altaffiliation[Now at ]{University of California, Santa Barbara, 
%California  93106}
\affiliation{Enrico Fermi Institute, University of Chicago, Chicago, 
Illinois 60637}

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

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

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

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

\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{S.~R.~Blusk}
\affiliation{University of Rochester, Rochester, New York 14627}

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

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

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

\author{A.~Brandl}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131} 

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

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

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

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

\author{N.~Bruner}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131} 

\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{Harvard University, Cambridge, Massachusetts 02138} 

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

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

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

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

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

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

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

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

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

\author{W.~Caskey}
\affiliation{University of California at Davis, Davis, California  95616}

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

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

\author{A.~Cerri}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

\author{A.~W.~Chan}
\affiliation{Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, 
Republic of China}

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

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

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

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

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

\author{M.~-T.~Cheng}
\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, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

\author{I.~Chirikov-Zorin}
\affiliation{Joint Institute for Nuclear Research, RU-141980 Dubna, Russia}

\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{L.~Christofek}
\affiliation{University of Illinois, Urbana, Illinois 61801}

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

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

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

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

\author{C.~I.~Ciobanu}
\affiliation{The Ohio State University, Columbus, Ohio  43210}

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

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

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

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

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

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

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

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

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

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

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

\author{M.~Dell'Orso}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

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

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

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

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

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

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

\author{S.~Donati}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

\author{M.~D'Onofrio}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

\author{T.~Dorigo}
\affiliation{Harvard University, Cambridge, Massachusetts 02138} 

\author{I.~Dunietz}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 
60510}

\author{N.~Eddy}
\affiliation{University of Illinois, Urbana, Illinois 61801}

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

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

\author{E.~Engels,~Jr.}
\affiliation{University of Pittsburgh, Pittsburgh, Pennsylvania 15260} 

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

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

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

\author{Q.~Fan}
\affiliation{University of Rochester, Rochester, New York 14627}

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

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

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

\author{C.~Ferretti}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

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

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

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

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

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

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

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

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

\author{S.~Galeotti}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

\author{A.~Gallas}
\affiliation{Northwestern University, Evanston, Illinois  60208} 

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

\author{T.~Gao}
\affiliation{University of Pennsylvania, Philadelphia, 
        Pennsylvania 19104}

\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{P.~Gatti}
\affiliation{Universita di Padova, Istituto Nazionale di Fisica 
          Nucleare, Sezione di Padova, I-35131 Padova, Italy}

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

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

\author{E.~Gerstein}
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15218} 

\author{P.~Giannetti}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

%\author{P.~Giromini}
%\affiliation{Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica
%               Nucleare, I-00044 Frascati, Italy}
%
\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{J.~Goldstein}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 
60510}

\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{Rockefeller University, New York, New York 10021}

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

\author{G.~Grim}
\affiliation{University of California at Davis, Davis, California  95616}

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

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

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

\author{G.~Guillian}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}

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

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

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

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

\author{C.~Hall}
\affiliation{Harvard University, Cambridge, Massachusetts 02138} 

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

\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{A.~D.~Hardman}
\affiliation{Purdue University, West Lafayette, Indiana 47907}

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

\author{F.~Hartmann}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, 
Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}

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

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

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

\author{A.~Heiss}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, 
Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}

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

\author{C.~Hill}
\affiliation{University of California at Davis, Davis, California  95616}

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

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

\author{R.~Hollebeek}
\affiliation{University of Pennsylvania, Philadelphia, 
        Pennsylvania 19104}

\author{L.~Holloway}
\affiliation{University of Illinois, Urbana, Illinois 61801}

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

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

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

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

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

\author{J.~Incandela}
%\altaffiliation[Now at ]{University of California, Santa Barbara, 
%California  93106}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 
60510}

\author{G.~Introzzi}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

\author{J.~Iwai}
\affiliation{Waseda University, Tokyo 169, Japan}

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

\author{E.~James}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}

\author{M.~Jones}
\affiliation{University of Pennsylvania, Philadelphia, 
        Pennsylvania 19104}

\author{U.~Joshi}
\affiliation{Fermi National Accelerator Laboratory, Batavia, Illinois 
60510}

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

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

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

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

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

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

\author{H.~Kasha}
\affiliation{Yale University, New Haven, Connecticut 06520}

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

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

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

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

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

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

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

\author{B.~Kilminster}
\affiliation{University of Rochester, Rochester, New York 14627}

\author{B.~J.~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{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{M.~J.~Kim}
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15218} 

\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{Ernest Orlando Lawrence Berkeley National Laboratory, 
Berkeley, California 94720}

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

\author{M.~Kirk}
\affiliation{Brandeis University, Waltham, Massachusetts 02254}

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

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

\author{P.~Koehn}
\affiliation{The Ohio State University, Columbus, Ohio  43210}

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

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

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

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

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

\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}
%\affiliation{Texas Tech University, Lubbock, Texas 79409}

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

\author{K.~Kurino}
\affiliation{Hiroshima University, Higashi-Hiroshima 724, Japan}

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

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

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

\author{S.~Lami}
\affiliation{Rockefeller University, New York, New York 10021}

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

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

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

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

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

\author{G.~Latino}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131} 

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

\author{K.~Lee}
\affiliation{Texas Tech University, Lubbock, Texas 79409}

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

\author{S.~Leone}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

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

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

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

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

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

\author{O.~Lobban}
\affiliation{Texas Tech University, Lubbock, Texas 79409}

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

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

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

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

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

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

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

\author{R.~Madrak}
\affiliation{Harvard University, Cambridge, Massachusetts 02138} 

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

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

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

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

\author{M.~Mangano}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

\author{M.~Mariotti}
\affiliation{Universita di Padova, Istituto Nazionale di Fisica 
          Nucleare, Sezione di Padova, I-35131 Padova, Italy}

\author{G.~Martignon}
\affiliation{Universita di Padova, Istituto Nazionale di Fisica 
          Nucleare, Sezione di Padova, I-35131 Padova, Italy}

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

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

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

\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{M.~Menguzzato}
\affiliation{Universita di Padova, Istituto Nazionale di Fisica 
          Nucleare, Sezione di Padova, I-35131 Padova, Italy}

\author{A.~Menzione}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

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

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

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

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

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

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

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

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

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

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

\author{E.~Moore}
\affiliation{University of New Mexico, Albuquerque, New Mexico 87131} 

\author{R.~Moore}
\affiliation{University of Michigan, Ann Arbor, Michigan 48109}

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

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

\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\"{u}r Experimentelle Kernphysik, 
Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}

\author{A.~Munar}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

\author{S.~Murgia}
\affiliation{Michigan State University, East Lansing, Michigan  48824}

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

\author{V.~Nagaslaev}
\affiliation{Texas Tech University, Lubbock, Texas 79409}

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

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

\author{I.~Nakano}
\affiliation{Hiroshima University, Higashi-Hiroshima 724, Japan}

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

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

\author{C.~Neu}
\affiliation{The Ohio State University, Columbus, Ohio  43210}

\author{D.~Neuberger}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, 
Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}

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

\author{C.-Y.~P.~Ngan}
\affiliation{Massachusetts Institute of Technology, Cambridge,
Massachusetts  02139} 

\author{H.~Niu}
\affiliation{Brandeis University, Waltham, Massachusetts 02254}

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

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

\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.~Ohmoto}
\affiliation{Hiroshima University, Higashi-Hiroshima 724, Japan}

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

\author{R.~Oishi}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, Japan}

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

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

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

\author{C.~Pagliarone}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

\author{F.~Palmonari}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

\author{R.~Paoletti}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

\author{V.~Papadimitriou}
\affiliation{Texas Tech University, Lubbock, Texas 79409}

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

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

\author{M.~Paulini}
\affiliation{Carnegie Mellon University, Pittsburgh, PA  15218} 

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

\author{L.~Pescara}
\affiliation{Universita di Padova, Istituto Nazionale di Fisica 
          Nucleare, Sezione di Padova, I-35131 Padova, Italy}

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

\author{G.~Piacentino}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

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

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

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

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

\author{G.~Punzi}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

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

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

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

\author{A.~Ribon}
\affiliation{Universita di Padova, Istituto Nazionale di Fisica 
          Nucleare, Sezione di Padova, I-35131 Padova, Italy}

\author{W.~Riegler}
\affiliation{Harvard University, Cambridge, Massachusetts 02138} 

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

\author{L.~Ristori}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

\author{M.~Riveline}
\affiliation{Institute of Particle Physics, University of Toronto, Toronto
M5S 1A7, Canada}

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

\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{L.~Rosenson}
\affiliation{Massachusetts Institute of Technology, Cambridge,
Massachusetts  02139} 

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

\author{R.~Rossin}
\affiliation{Universita di Padova, Istituto Nazionale di Fisica 
          Nucleare, Sezione di Padova, I-35131 Padova, Italy}

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

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

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

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

\author{C.~Sanchez}
\affiliation{The Ohio State University, Columbus, Ohio  43210}

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

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

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

\author{P.~Savard}
\affiliation{Institute of Particle Physics, University of Toronto, Toronto
M5S 1A7, Canada}

\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{Universita di Padova, Istituto Nazionale di Fisica 
          Nucleare, Sezione di Padova, I-35131 Padova, Italy}

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

\author{A.~Scribano}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

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

\author{Y.~Seiya}
\affiliation{University of Tsukuba, Tsukuba, Ibaraki 305, 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{T.~Shah}
\affiliation{Massachusetts Institute of Technology, Cambridge,
Massachusetts  02139} 

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

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

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

\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{A.~Sidoti}
\affiliation{Universita di Padova, Istituto Nazionale di Fisica 
          Nucleare, Sezione di Padova, I-35131 Padova, Italy}

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

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

\author{P.~Sinervo}
\affiliation{Institute of Particle Physics, University of Toronto, Toronto
M5S 1A7, Canada}

\author{P.~Singh}
\affiliation{University of Illinois, Urbana, Illinois 61801}

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

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

\author{C.~Smith}
\affiliation{The Johns Hopkins University, Baltimore, Maryland 21218}

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

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

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

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

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

\author{P.~Sphicas}
\affiliation{Massachusetts Institute of Technology, Cambridge,
Massachusetts  02139} 

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

\author{F.~Spinella}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

\author{A.~Stefanini}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

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

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

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

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

\author{R.~Takashima}
\affiliation{Hiroshima University, Higashi-Hiroshima 724, Japan}

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

\author{P.~Tamburello}
\affiliation{Duke University, Durham, North Carolina  27708} 

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

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

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

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

\author{R.~Thurman-Keup}
\affiliation{Argonne National Laboratory, Argonne, Illinois 60439}

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

\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{University of Rochester, Rochester, New York 14627}

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

\author{D.~Tonelli}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

\author{M.~Tonnesmann}
\affiliation{Michigan State University, East Lansing, Michigan  48824}

\author{H.~Toyoda}
\affiliation{Osaka City University, Osaka 588, Japan} 

\author{W.~Trischuk}
\affiliation{Institute of Particle Physics, University of Toronto, Toronto
M5S 1A7, Canada}

\author{J.~F.~de~Troconiz}
\affiliation{Harvard University, Cambridge, Massachusetts 02138} 

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

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

\author{N.~Turini}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

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

\author{E.~Vataga}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

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

\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.~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{D.~Vucinic}
\affiliation{Massachusetts Institute of Technology, Cambridge,
Massachusetts  02139} 

\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\"{u}r Experimentelle Kernphysik, 
Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}

\author{N.~B.~Wallace}
\affiliation{Rutgers University, Piscataway, New Jersey 08855}

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

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

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

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

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

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

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

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

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

\author{H.~Wenzel}
\affiliation{Institut f\"{u}r Experimentelle Kernphysik, 
Universit\"{a}t Karlsruhe, 76128 Karlsruhe, Germany}

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

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

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

\author{T.~Wilkes}
\affiliation{University of California at Davis, Davis, California  95616}

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

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

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

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

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

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

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

\author{J.~Wyss}
\affiliation{Istituto Nazionale di Fisica Nucleare, University and Scuola
               Normale Superiore of Pisa, I-56100 Pisa, Italy} 

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

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

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

\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{Z.~Yu}
\affiliation{Yale University, New Haven, Connecticut 06520}

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

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

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

%\auth

hep-ex0202044.extracted_bib
\begin{thebibliography}{99}

% introduction.tex

\bibitem{SM} S.~L. ~Glashow,
Nucl. Phys. {\bf 22} 588, (1961); S. Weinberg,
Phys. Rev. Lett. {\bf 19} 1264, (1967);
A. Salam, Proc. 8th Nobel Symposium, Stockholm, (1979).
      
\bibitem{jeffPRD}  A longer description of this analysis is available in
D. Acosta \textit{et al.}, submitted to Phys. Rev. D (hep-ex/0110015).

\bibitem{eegg}
% CDF diphoton plus met PRD
F.~Abe \textit{et al.}, Phys. Rev. D \textbf{59}, 092002 (1999); see
also
D.~Toback, Ph.D. thesis, University of Chicago, 1997.
\bibitem{susy} See, for example,
S.~Ambrosanio, G.~L.~Kane, G.~D.~Kribs, S.~P.~Martin, and S.~Mrenna,
Phys. Rev. D \textbf{55}, 1372 (1997);
 for a recent (post Ref. 2) interpretation see: B.C. Allanach, S. Lola,
 K. Sridhar, CERN-TH-2001-360.

% G.~L.~Kane and S.~Mrenna,
%Phys. Rev. Lett. \textbf{77} 3502 (1996);
%S.~Ambrosanio, G.~L.~Kane, G.~D.~Kribs, S.~P.~Martin, and S.~Mrenna, 
%Phys. Rev. D \textbf{55}, 1372 (1997). 

%%%%%\bibitem{gg} See, for example:
%SEARCH FOR GAUGE MEDIATED SUSY BREAKING
%TOPOLOGIES AT S**(1/2) SIMILAR TO 189-GEV.
%R. Barate \textit{et al.}, Eur. Phys. J. C \textbf{16} 71, (2000);
% D0 higgs search
%%%%%%B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{82}, 2244 (1999);
% D0 gmsb limits
%%%%%B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{80}, 442 (1998);
% D0 monopole search
%B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{81}, 524 (1998);
% CDF diphoton plus met PRL
%%%%%F.~Abe \textit{et al.}, Phys. Rev. Lett \textbf{81}, 1791 (1998);
% CDF PJW diphoton analysis
%P.~J.~Wilson, in \textit{ICHEP 98}, Proceedings of the 
%29th International Conference in High-energy Physics, 
%Vancouver, Canada, 1998, edited by 
%A.~Astbury, D.~Axen and J.~Robinson (World Scientific, Singapore, 1998); 
% D0 diphoton plus met
%%%%S.~Abachi \textit{et al.}, Phys. Rev. Lett. \textbf{78}, 2070 (1997);
%SEARCH FOR ANOMALOUS PRODUCTION OF HIGH MASS PHOTON PAIRS IN E+ E-
%COLLISIONS AT LEP.
%%%%%%P.D. Acton \textit{et al.}, Phys. Lett. \textbf{B311} 391, (1993).


\bibitem{gg}
% CDF PJW diphoton analysis
T.~Affolder \textit{et al.}, Phys. Rev. D \textbf{64}, 092002 (2001);
% CDF diphoton plus met PRL
F.~Abe \textit{et al.}, Phys. Rev. Lett \textbf{81}, 1791 (1998). See
also:
% L3 quartic couplings
P.~Achard \textit{et al.}, Phys. Lett. \textbf{B527} 29, (2002);
% OPAL generic photon searches
G.~Abbiendi \textit{et al.}, Eur. Phys. J. C \textbf{18} 253, (2000);
% DELPHI SUSY
P.~Abreu \textit{et al.}, Eur. Phys. J. C \textbf{17} 53, (2000);
% ALEPH SUSY
R. Barate \textit{et al.}, Eur. Phys. J. C \textbf{16} 71, (2000);
% D0 higgs search
B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{82}, 2244 (1999);
% D0 monopole search
B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{81}, 524 (1998);
% D0 gmsb limits
B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{80}, 442 (1998);
% D0 diphoton plus met
S.~Abachi \textit{et al.}, Phys. Rev. Lett. \textbf{78}, 2070 (1997);
\bibitem{gj} 
% D0 photon plus jets plus met
B.~Abbott \textit{et al.}, Phys. Rev. Lett. \textbf{82}, 29 (1999);
% D0 Sleuth: 
For a next-generation signature-based search, see:
B.~Abbott  \textit{et al.}, Phys.Rev.D64:012004, 2001.

\bibitem{gb}
% CDF photon bb technicolor search
F.~Abe \textit{et al.}, Phys. Rev. Lett \textbf{83}, 3124 (1999).

\bibitem{cdfblurb} A detailed description can be found in
F. Abe \textit{et al.}, Nucl. Instrum. Methods Phys. Res.,
Sect.~A \textbf{271}, 387 (1988).  

\bibitem{CDFcoo}  The CDF coordinate system of 
$r$, $\varphi$, and $z$ is cylindrical, with the $z$-axis along the
proton beam.  The pseudorapidity is $\eta = -\ln(\tan(\theta/2))$. 

\bibitem{EtPt} The transverse momentum is defined as $\Pt =
p\sin\theta$; the transverse energy is defined as $\Et = E\sin\theta$.
Missing transverse energy is defined as the vector opposite to the
vector sum of the transverse energies of all objects in an event,
$\vec{{\rm \not\! E}_{\rm T}} = -\Sigma\vec{\Et}$. We use the 
convention that `momentum' refers to $pc$ and `mass' to $mc^2$, so that energy,
momentum, and mass are all measured in GeV.

%\bibitem{Drell-Yan} 
%F.~Abe \textit{et al.}, Phys. Rev. D \textbf{59}, 052002 (1999).

%\bibitem{CFT} 
%G.~W.~Foster \textit{et al.}, 
%Nucl. Instrum. Methods Phys. Res. A \textbf{268}, 33 (1988).

%selection.tex

\bibitem{cdf lepton id}
%top mass prd
T.~Affolder \textit{et al.}, Phys. Rev. D \textbf{63}, 032003 (2001);
%top evidence
F.~Abe \textit{et al.}, Phys. Rev. D \textbf{50}, 2966 (1994).

%\bibitem{W mass}
% W mass PRD
%T.~Affolder \textit{et al.}, Phys. Rev. D \textbf{64}, 052001 (2001);
% W mass 1a
%F.~Abe \textit{et al.}, Phys. Rev. D \textbf{52}, 4784 (1995).

%\bibitem{trigger tower} Trigger towers subtend 0.2 in $\eta$ by 
%$15^{\circ}$ in $\varphi$.

\bibitem{jwb thesis}
J.~Berryhill, Ph.D. thesis, University of Chicago, 2000.

%\bibitem{mk thesis}
%M.~Kruse, Ph.D. thesis, Purdue University, 1996.

\bibitem{r_papers}
F.~Abe \textit{et al.}, Phys. Rev. D \textbf{52}, 2624 (1995).

\bibitem{jet id}
F.~Abe \textit{et al.}, Phys. Rev. D \textbf{45}, 1448 (1992).

\bibitem{diboson matrix}
U.~Baur and E.~L.~Berger, Phys. Rev. D \textbf{47}, 4889 (1993);
\textbf{41}, 1476 (1990).

\bibitem{diboson mc} U.~Baur and S.~Mrenna, private communication.
%The source code is available publicly at  
%\url{http://moose.ucdavis.edu/mrenna/code}.

\bibitem{pythia}
T.~Sjostrand, Computer Physics Commun. \textbf{82} (1994) 74;
S.~Mrenna, Computer Physics Commun. \textbf{101} (1997) 232.
 
%\bibitem{K factor} 
%U. Baur, T. Han, and J. Ohnemus,
%Phys. Rev. D \textbf{57} (1998) 2823 and references therein.
%U. Baur, T. Han, and J. Ohnemus,
%Phys. Rev. D \textbf{48} (1993) 5140; 
%J. Ohnemus,
%Phys. Rev. D \textbf{47} (1993) 940.

\bibitem{delta_mu}
The uncertainty in $\mu_{SM}$ is the standard deviation of a
large ensemble of calculations, and takes into account correlated
uncertainties.
         
\bibitem{e_mu_diff} The observed
muon-electron difference is statistically insignificant; the probability
that 16 events divide up into two categories 
as asymmetrically as 11 to 5 or higher is greater than 8\%. 

\bibitem{referee_motivation} Although the single distributions are not
statistically in conflict with the SM, several events have unusual
topologies. One of the 16 events is the
$ee\gamma\gamma\mett$ event~\cite{eegg}; the inclusive sample also
includes a candidate
$Z^0 +\gamma$ event with an invariant mass of 400 GeV~\cite{jwb
thesis} and a candidate $\mu\mu\gamma\gamma+$jets event~\cite{eegg}.  We
await higher statistics in Run II.



\end{thebibliography}