{\Large \boldmath Measurement of the Branching Fraction and \CP-violating Asymmetries in %\Bztodstdcc decays Neutral $B$ Decays to $D^{*\pm}D^{\mp}$ }
B.~Aubert
%We present a measurement of the branching fraction of and \CP-violating asymmetries in the decay \Bztodstdcc. We present measurements of the branching fraction and \CP-violating asymmetries for neutral $B$ decays to $D^{*\pm}D^{\mp}$. %neutral $B$ decays to the final states $D^{*-}D^{+}$ and $D^{*+}D^{-}$. %, with the underlying quark process $b \to c\bar{c}d$. The measurement uses a data sample of approximately 88 million \Y4S $\to$ \BB decays collected with the \babar\ detector at the SLAC PEP-II asymmetric-energy $e^{+}$-$e^{-}$ collider. By fully reconstructing the $D^{*\pm}D^{\mp}$ decay products, we measure the branching fraction to be $(8.8 \pm 1.0 \pm 1.3) \times 10^{-4}$ and the time-integrated \CP-violating asymmetry between the rates to $D^{*-}D^{+}$ and $D^{*+}D^{-}$ to be $\mathcal{A} = -0.03 \pm 0.11 \pm 0.05$. We also measure the time-dependent \CP-violating asymmetry parameters to be $S_{\scriptscriptstyle -+} = -0.24 \pm 0.69 \pm 0.12$, $C_{\scriptscriptstyle -+} = -0.22 \pm 0.37 \pm 0.10$ for $B \to D^{*-}D^{+}$ and $S_{\scriptscriptstyle +-} = -0.82 \pm 0.75 \pm 0.14$, $C_{\scriptscriptstyle +-} = -0.47 \pm 0.40 \pm 0.12$ for $B \to D^{*+}D^{-}$. %the first errors are statistical and the second are systematic. In each case the first error is statistical and the second error is systematic.
paper_inline.tex
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%%   Sample draft of PRL in RevTEX format
%%   
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

% Use this class for normal prl format
\documentclass[twocolumn,showpacs,aps,prl,superscriptaddress]{revtex4}

%Use this line for a single narrow column per page
%to facilitate markup
%\documentclass[onecolumn,showpacs,aps,prl,superscriptaddress]{revtex4}\setlength{\textwidth}{9.0cm}



\usepackage{graphicx}
\usepackage{dcolumn}
\usepackage{amsmath}
\usepackage{epsfig}
\usepackage[dvips]{feynmp}


% Input the pubboard symbols file
%%%%%   Standard symbols for use in BABAR papers and BAD Notes
%%%%%
%%%%%   Revised   05/22/01 P. Dauncey     Added \hepex, etc. and clean up a bit
%%%%%   Revised   12/07/00 D. Hitlin      Added features of D. Kirkby's HEP.sty
%%%%%   Revised   07/13/00 R. Waldi       Corrected \Kbar, \Bbar ... macros
%%%%%   Revised   07/13/00 D. MacFarlane  Replaced incorrect \chic1 symbols
%%%%%   Revised   07/05/00 P. Dauncey     Added \mes, \mec, removed \O
%%%%%   Revised   07/04/00 D. MacFarlane  Added scalable version of BABAR
%%%%%   Revised   07/01/00 D. MacFarlane
%%%%%   Revised   06/21/00 D. Hitlin
%%%%%   Original  06/10/00 D. Hitlin
%%%%%   Revision of TDR and Physics Book symbol file
%%%%%

\RequirePackage{xspace}

%%%%%%%%%%%%%%%%%%%% BABAR ... THE NAME OF THE COLLABORATION %%%%

% Huge boldface
\def\hbabar{\mbox{{\huge\bf\sl B}\hspace{-0.1em}{\LARGE\bf\sl A}\hspace{-0.03em}{\huge\bf\sl B}\hspace{-0.1em}{\LARGE\bf\sl A\hspace{-0.03em}R}}}
% LARGE
\def\Lbabar{\mbox{{\LARGE\sl B}\hspace{-0.15em}{\Large\sl A}\hspace{-0.07em}{\LARGE\sl B}\hspace{-0.15em}{\Large\sl A\hspace{-0.02em}R}}}
% Large
\def\lbabar{\mbox{{\large\sl B}\hspace{-0.4em} {\normalsize\sl A}\hspace{-0.03em}{\large\sl B}\hspace{-0.4em} {\normalsize\sl A\hspace{-0.02em}R}}}
% normal size
%\def\babar{\mbox{\sl B\hspace{-0.4em} {\small\sl A}\hspace{-0.37em} \sl B\hspace{-0.4em} {\small\sl A\hspace{-0.02em}R}}}
% replace normalsize with scalable version       dbm 7/4/00
\usepackage{relsize}
\def\babar{\mbox{\slshape B\kern-0.1em{\smaller A}\kern-0.1em
    B\kern-0.1em{\smaller A\kern-0.2em R}}}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%   LEPTONS   %%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\let\emi\en
\def\electron   {\ensuremath{e}\xspace}
\def\en         {\ensuremath{e^-}\xspace}   % electron negative (\em is taken)
\def\ep         {\ensuremath{e^+}\xspace}
\def\epm        {\ensuremath{e^\pm}\xspace} 
\def\epem       {\ensuremath{e^+e^-}\xspace}
\def\ee         {\ensuremath{e^-e^-}\xspace}

\def\mmu        {\ensuremath{\mu}\xspace}
\def\mup        {\ensuremath{\mu^+}\xspace}
\def\mun        {\ensuremath{\mu^-}\xspace} % muon negative (\mum is taken)
\def\mumu       {\ensuremath{\mu^+\mu^-}\xspace}
\def\mtau       {\ensuremath{\tau}\xspace}

\def\taup       {\ensuremath{\tau^+}\xspace}
\def\taum       {\ensuremath{\tau^-}\xspace}
\def\tautau     {\ensuremath{\tau^+\tau^-}\xspace}

\def\ellm       {\ensuremath{\ell^-}\xspace}
\def\ellp       {\ensuremath{\ell^+}\xspace}
\def\ellell     {\ensuremath{\ell^+ \ell^-}\xspace}

\def\nub        {\ensuremath{\overline{\nu}}\xspace}
\def\nunub      {\ensuremath{\nu{\overline{\nu}}}\xspace}
\def\nub        {\ensuremath{\overline{\nu}}\xspace}
\def\nunub      {\ensuremath{\nu{\overline{\nu}}}\xspace}
\def\nue        {\ensuremath{\nu_e}\xspace}
\def\nueb       {\ensuremath{\nub_e}\xspace}
\def\nuenueb    {\ensuremath{\nue\nueb}\xspace}
\def\num        {\ensuremath{\nu_\mu}\xspace}
\def\numb       {\ensuremath{\nub_\mu}\xspace}
\def\numnumb    {\ensuremath{\num\numb}\xspace}
\def\nut        {\ensuremath{\nu_\tau}\xspace}
\def\nutb       {\ensuremath{\nub_\tau}\xspace}
\def\nutnutb    {\ensuremath{\nut\nutb}\xspace}
\def\nul        {\ensuremath{\nu_\ell}\xspace}
\def\nulb       {\ensuremath{\nub_\ell}\xspace}
\def\nulnulb    {\ensuremath{\nul\nulb}\xspace}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%  PHOTONS  %%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\g     {\ensuremath{\gamma}\xspace}
\def\gaga  {\ensuremath{\gamma\gamma}\xspace}  %% changed from \gg, which is >>
\def\ggstar{\ensuremath{\gamma\gamma^*}\xspace}

\def\ega    {\ensuremath{e\gamma}\xspace}
\def\game   {\ensuremath{\gamma e^-}\xspace}
\def\epemg  {\ensuremath{e^+e^-\gamma}\xspace}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%  Other GAUGE BOSONS  %%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\H      {\ensuremath{H^0}\xspace}
\def\Hp     {\ensuremath{H^+}\xspace}
\def\Hm     {\ensuremath{H^-}\xspace}
\def\Hpm    {\ensuremath{H^\pm}\xspace}
\def\W      {\ensuremath{W}\xspace}
\def\Wp     {\ensuremath{W^+}\xspace}
\def\Wm     {\ensuremath{W^-}\xspace}
\def\Wpm    {\ensuremath{W^\pm}\xspace}
\def\Z      {\ensuremath{Z^0}\xspace}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%   QUARKS   %%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\q     {\ensuremath{q}\xspace}
\def\qbar  {\ensuremath{\overline q}\xspace}
\def\qqbar {\ensuremath{q\overline q}\xspace}
\def\u     {\ensuremath{u}\xspace}
\def\ubar  {\ensuremath{\overline u}\xspace}
\def\uubar {\ensuremath{u\overline u}\xspace}
\def\d     {\ensuremath{d}\xspace}
\def\dbar  {\ensuremath{\overline d}\xspace}
\def\ddbar {\ensuremath{d\overline d}\xspace}
\def\s     {\ensuremath{s}\xspace}
\def\sbar  {\ensuremath{\overline s}\xspace}
\def\ssbar {\ensuremath{s\overline s}\xspace}
\def\c     {\ensuremath{c}\xspace}
\def\cbar  {\ensuremath{\overline c}\xspace}
\def\ccbar {\ensuremath{c\overline c}\xspace}
\def\b     {\ensuremath{b}\xspace}
\def\bbar  {\ensuremath{\overline b}\xspace}
\def\bbbar {\ensuremath{b\overline b}\xspace}
\def\t     {\ensuremath{t}\xspace}
\def\tbar  {\ensuremath{\overline t}\xspace}
\def\tbar  {\ensuremath{\overline t}\xspace}
\def\ttbar {\ensuremath{t\overline t}\xspace}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%% LIGHT MESONS  %%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\piz   {\ensuremath{\pi^0}\xspace}
\def\pizs  {\ensuremath{\pi^0\mbox\,\rm{s}}\xspace}
\def\ppz   {\ensuremath{\pi^0\pi^0}\xspace}
\def\pip   {\ensuremath{\pi^+}\xspace}
\def\pim   {\ensuremath{\pi^-}\xspace}
\def\pipi  {\ensuremath{\pi^+\pi^-}\xspace}
\def\pipm  {\ensuremath{\pi^\pm}\xspace}
\def\pimp  {\ensuremath{\pi^\mp}\xspace}

\def\kaon  {\ensuremath{K}\xspace}
%%% do NOT use ensuremath here
\def\Kbar  {\kern 0.2em\overline{\kern -0.2em K}{}\xspace}
\def\Kb    {\ensuremath{\Kbar}\xspace}
\def\Kz    {\ensuremath{K^0}\xspace}
\def\Kzb   {\ensuremath{\Kbar^0}\xspace}
\def\KzKzb {\ensuremath{\Kz \kern -0.16em \Kzb}\xspace}
\def\Kp    {\ensuremath{K^+}\xspace}
\def\Km    {\ensuremath{K^-}\xspace}
\def\Kpm   {\ensuremath{K^\pm}\xspace}
\def\Kmp   {\ensuremath{K^\mp}\xspace}
\def\KpKm  {\ensuremath{\Kp \kern -0.16em \Km}\xspace}
\def\KS    {\ensuremath{K^0_{\scriptscriptstyle S}}\xspace} 
\def\KL    {\ensuremath{K^0_{\scriptscriptstyle L}}\xspace} 
\def\Kstarz  {\ensuremath{K^{*0}}\xspace}
\def\Kstarzb {\ensuremath{\Kbar^{*0}}\xspace}
\def\Kstar   {\ensuremath{K^*}\xspace}
\def\Kstarb  {\ensuremath{\Kbar^*}\xspace}
\def\Kstarp  {\ensuremath{K^{*+}}\xspace}
\def\Kstarm  {\ensuremath{K^{*-}}\xspace}
\def\Kstarpm {\ensuremath{K^{*\pm}}\xspace}
\def\Kstarmp {\ensuremath{K^{*\mp}}\xspace}

\newcommand{\etapr}{\ensuremath{\eta^{\prime}}\xspace}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%% HEAVY MESONS  %%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%% do NOT use ensuremath here
\def\Dbar    {\kern 0.2em\overline{\kern -0.2em D}{}\xspace}
\def\Db      {\ensuremath{\Dbar}\xspace}
\def\Dz      {\ensuremath{D^0}\xspace}
\def\Dzb     {\ensuremath{\Dbar^0}\xspace}
\def\DzDzb   {\ensuremath{\Dz {\kern -0.16em \Dzb}}\xspace}
\def\Dp      {\ensuremath{D^+}\xspace}
\def\Dm      {\ensuremath{D^-}\xspace}
\def\Dpm     {\ensuremath{D^\pm}\xspace}
\def\Dmp     {\ensuremath{D^\mp}\xspace}
\def\DpDm    {\ensuremath{\Dp {\kern -0.16em \Dm}}\xspace}
\def\Dstar   {\ensuremath{D^*}\xspace}
\def\Dstarb  {\ensuremath{\Dbar^*}\xspace}
\def\Dstarz  {\ensuremath{D^{*0}}\xspace}
\def\Dstarzb {\ensuremath{\Dbar^{*0}}\xspace}
\def\Dstarp  {\ensuremath{D^{*+}}\xspace}
\def\Dstarm  {\ensuremath{D^{*-}}\xspace}
\def\Dstarpm {\ensuremath{D^{*\pm}}\xspace}
\def\Dstarmp {\ensuremath{D^{*\mp}}\xspace}
\def\Ds      {\ensuremath{D^+_s}\xspace}
\def\Dsb     {\ensuremath{\Dbar^+_s}\xspace}
\def\Dss     {\ensuremath{D^{*+}_s}\xspace}

% Obsolete
\newcommand{\dstr}{\ensuremath{\Dstar}\xspace}
\newcommand{\dstrstr}{\ensuremath{D^{**}}\xspace}
\newcommand{\dsp}{\ensuremath{\Dstarp}\xspace}
\newcommand{\dsm}{\ensuremath{\Dstarm}\xspace}
\newcommand{\dsz}{\ensuremath{\Dstarz}\xspace}


\def\B       {\ensuremath{B}\xspace}
%%% do NOT use ensuremath here
\def\Bbar    {\kern 0.18em\overline{\kern -0.18em B}{}\xspace}
\def\Bb      {\ensuremath{\Bbar}\xspace}
\def\BB      {\ensuremath{B\Bbar}\xspace} 
\def\Bz      {\ensuremath{B^0}\xspace}
\def\Bzb     {\ensuremath{\Bbar^0}\xspace}
\def\BzBzb   {\ensuremath{\Bz {\kern -0.16em \Bzb}}\xspace}
\def\Bu      {\ensuremath{B^+}\xspace}
\def\Bub     {\ensuremath{B^-}\xspace}
\def\Bp      {\ensuremath{\Bu}\xspace}
\def\Bm      {\ensuremath{\Bub}\xspace}
\def\Bpm     {\ensuremath{B^\pm}\xspace}
\def\Bmp     {\ensuremath{B^\mp}\xspace}
\def\BpBm    {\ensuremath{\Bu {\kern -0.16em \Bub}}\xspace}
\def\Bs      {\ensuremath{B_s}\xspace}
\def\Bsb     {\ensuremath{\Bbar_s}\xspace}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%% ONIA %%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\jpsi     {\ensuremath{{J\mskip -3mu/\mskip -2mu\psi\mskip 2mu}}\xspace}
\def\psitwos  {\ensuremath{\psi{(2S)}}\xspace}
\def\psiprpr  {\ensuremath{\psi(3770)}\xspace}
\def\etac     {\ensuremath{\eta_c}\xspace}
\def\chiczero {\ensuremath{\chi_{c0}}\xspace}
\def\chicone  {\ensuremath{\chi_{c1}}\xspace}
\def\chictwo  {\ensuremath{\chi_{c2}}\xspace}
\mathchardef\Upsilon="7107
\def\Y#1S{\ensuremath{\Upsilon{(#1S)}}\xspace}% no space before {...}!
\def\OneS  {\Y1S}
\def\TwoS  {\Y2S}
\def\ThreeS{\Y3S}
\def\FourS {\Y4S}
\def\FiveS {\Y5S}

%\def\chic1{\ensuremath{\chi_{c1}}}
%\def\chic2{\ensuremath{\chi_{c2}}}
%\def\chic3{\ensuremath{\chi_{c3}}}
\def\chic#1{\ensuremath{\chi_{c#1}}\xspace} % dbm


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%% BARYONS %%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\proton      {\ensuremath{p}\xspace}
\def\antiproton  {\ensuremath{\overline p}\xspace}
\def\neutron     {\ensuremath{n}\xspace}
\def\antineutron {\ensuremath{\overline n}\xspace}

\mathchardef\Deltares="7101
\mathchardef\Xi="7104
\mathchardef\Lambda="7103
\mathchardef\Sigma="7106
\mathchardef\Omega="710A

%%% do NOT use ensuremath here
\def\Deltabar{\kern 0.25em\overline{\kern -0.25em \Deltares}{}\xspace}
\def\Lbar{\kern 0.2em\overline{\kern -0.2em\Lambda\kern 0.05em}\kern-0.05em{}\xspace}
\def\Sigbar{\kern 0.2em\overline{\kern -0.2em \Sigma}{}\xspace}
\def\Xibar{\kern 0.2em\overline{\kern -0.2em \Xi}{}\xspace}
\def\Obar{\kern 0.2em\overline{\kern -0.2em \Omega}{}\xspace}
\def\Nbar{\kern 0.2em\overline{\kern -0.2em N}{}\xspace}
\def\Xb{\kern 0.2em\overline{\kern -0.2em X}{}\xspace}

\def\X {\ensuremath{X}\xspace}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%% TAU BRANCHING FRACTIONS %%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\BR         {{\ensuremath{\cal B}\xspace}}
\def\BRtauptoe  {\ensuremath{\BR(\taup \to \ep)}\xspace}
\def\BRtaumtoe  {\ensuremath{\BR(\taum \to \en)}\xspace}
\def\BRtauptomu {\ensuremath{\BR(\taup \to \mup)}\xspace}
\def\BRtaumtomu {\ensuremath{\BR(\taum \to \mun)}\xspace}



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%  LIGHT HADRON DECAYS %%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\newcommand{\etaprepp}{\ensuremath{\etapr \to \eta \pipi}\xspace}
\newcommand{\etaprrg} {\ensuremath{\etapr \to \rho^0 \g}\xspace}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%  B DECAYS   %%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\bpsiks     {\ensuremath{\Bz \to \jpsi \KS}\xspace}
\def\bpsikst    {\ensuremath{\Bz \to \jpsi \Kstar}\xspace}
\def\bpsikl     {\ensuremath{\Bz \to \jpsi \KL}\xspace}
\def\bpsikzeropi{\ensuremath{\Bz \to \jpsi \Kstarz (\to \KL \piz)}\xspace}
\def\bpsikpluspi{\ensuremath{\Bu \to \jpsi \Kstarp (\to \KL \pip)}\xspace}
\def\bpsikpi    {\ensuremath{\Bz/\Bzb \to \jpsi (\to \mumu) \Kpm \pimp}\xspace}
\def\bupsik     {\ensuremath{\Bpm \to \jpsi (\to \mumu) \Kpm}\xspace}
\def\bpsiX      {\ensuremath{\Bz \to \jpsi \X}\xspace}

\def\Bzbtomu    {\ensuremath{\Bzb \to \mu \X}\xspace}
\def\Bzbtox     {\ensuremath{\Bzb \to \X}\xspace}
\def\Bztopipi   {\ensuremath{\Bz \to \pipi}\xspace}
\def\Bztokpi    {\ensuremath{\Bz \to \Kpm \pimp}\xspace}
\def\Bztorhopi  {\ensuremath{\Bz \to \rho^+ \pim}\xspace}
\def\Bztorhorho {\ensuremath{\Bz \to \rho \rho}\xspace}
\def\Bztokrho   {\ensuremath{\Bz \to K \rho}\xspace}
\def\Bztokstpi  {\ensuremath{\Bz \to \Kstar \pi}\xspace}
\def\Bztoapi    {\ensuremath{\Bz \to a_1 \pi}\xspace}
\def\Bztodd     {\ensuremath{\Bz \to \DpDm}\xspace}
\def\Bztodstd   {\ensuremath{\Bz \to \Dstarp \Dm}\xspace}
\def\Bztodstdst {\ensuremath{\Bz \to \Dstarp \Dstarm}\xspace}

\def\BtoDK      {\ensuremath{B \to DK}\xspace}
\def\Btodstlnu  {\ensuremath{B \to \Dstar \ell \nu}\xspace}
\def\Btodstdlnu {\ensuremath{B \to \Dstar(D) \ell \nu}\xspace}
\def\Btorholnu  {\ensuremath{B \to \rho \ell \nu}\xspace}
\def\Btopilnu   {\ensuremath{B \to \pi \ell \nu}\xspace}

\def\Btoetah    {\ensuremath{B \to \eta h}\xspace}
\def\Btoetaph   {\ensuremath{B \to \etapr h}\xspace}

\newcommand{\Betaprks}{\ensuremath{\Bz \to \etapr \KS}\xspace}
\newcommand{\Betaprkz}{\ensuremath{\Bz \to \etapr \Kz}\xspace}

\def\btosgam    {\ensuremath{b \to s \g}\xspace}
\def\btodgam    {\ensuremath{b \to d \g}\xspace}
\def\btosll     {\ensuremath{b \to s \ellell}\xspace}
\def\btosnunu   {\ensuremath{b \to s \nunub}\xspace}
\def\btosgaga   {\ensuremath{b \to s \gaga}\xspace}
\def\btosglue   {\ensuremath{b \to s g}\xspace}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%  Y(4S) DECAYS   %%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\upsbb   {\ensuremath{\FourS \to \BB}\xspace}
\def\upsbzbz {\ensuremath{\FourS \to \BzBzb}\xspace}
\def\upsbpbm {\ensuremath{\FourS \to \BpBm}\xspace}
\def\upspsikl{\ensuremath{\FourS \to (\bpsikl) (\Bzbtox)}\xspace}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%  TAU DECAYS   %%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\tauptoe    {\ensuremath{\taup \to \ep \nunub}\xspace}
\def\taumtoe    {\ensuremath{\taum \to \en \nunub}\xspace}
\def\tauptomu   {\ensuremath{\taup \to \mup \nunub}\xspace}
\def\taumtomu   {\ensuremath{\taum \to \mun \nunub}\xspace}
\def\tauptopi   {\ensuremath{\taup \to \pip \nub}\xspace}
\def\taumtopi   {\ensuremath{\taum \to \pim \nu}\xspace}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%% GAMMA-GAMMA REACTIONS %%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\ggtopi     {\ensuremath{\gaga \to \pipi}\xspace}
\def\ggtopiz    {\ensuremath{\gaga \to \ppz}\xspace}
\def\ggstox     {\ensuremath{\ggstar \to \X(1420) \to \kaon \kaon \pi}\xspace}
\def\ggstoeta   {\ensuremath{\ggstar \to \eta(550) \to \pipi \piz}\xspace}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%   KINEMATICS    %%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\ptot       {\mbox{$p$}\xspace}
%\def\pxy        {\mbox{$p_{\rm t}$}
\def\pxy        {\mbox{$p_T$}\xspace}
%\def\pt         {\mbox{$p_{\rm t}$}\xspace}
\def\pt         {\mbox{$p_T$}\xspace}
\def\mes        {\mbox{$m_{\rm ES}$}\xspace}
\def\mec        {\mbox{$m_{\rm EC}$}\xspace}
\def\DeltaE     {\mbox{$\Delta E$}\xspace}

\def\pbcm {\ensuremath{p^*_{\Bz}}\xspace}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%   GEOMETRY    %%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\mphi       {\mbox{$\phi$}\xspace}
\def\mtheta     {\mbox{$\theta$}\xspace}
\def\ctheta     {\mbox{$\cos\theta$}\xspace}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%% ENERGY AND MOMENTUM %%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\newcommand{\tev}{\ensuremath{\mathrm{\,Te\kern -0.1em V}}\xspace}
\newcommand{\gev}{\ensuremath{\mathrm{\,Ge\kern -0.1em V}}\xspace}
\newcommand{\mev}{\ensuremath{\mathrm{\,Me\kern -0.1em V}}\xspace}
\newcommand{\kev}{\ensuremath{\mathrm{\,ke\kern -0.1em V}}\xspace}
\newcommand{\ev}{\ensuremath{\mathrm{\,e\kern -0.1em V}}\xspace}
\newcommand{\gevc}{\ensuremath{{\mathrm{\,Ge\kern -0.1em V\!/}c}}\xspace}
\newcommand{\mevc}{\ensuremath{{\mathrm{\,Me\kern -0.1em V\!/}c}}\xspace}
\newcommand{\gevcc}{\ensuremath{{\mathrm{\,Ge\kern -0.1em V\!/}c^2}}\xspace}
\newcommand{\mevcc}{\ensuremath{{\mathrm{\,Me\kern -0.1em V\!/}c^2}}\xspace}
%\def\ev   {\ensuremath{\rm \,e\kern -0.08em V}}
%\def\kev  {\ensuremath{\rm \,ke\kern -0.08em V}} 
%\def\mev  {\ensuremath{\rm \,Me\kern -0.08em V}} 
%\def\gev  {\ensuremath{\rm \,Ge\kern -0.08em V}} 
%\def\gevc {\ensuremath{\rm \,Ge\kern -0.08em V\!/c}} 
%\def\gevc {\ensuremath{{\rm \,Ge\kern -0.08em V\!/}c}} 
%\def\tev  {\ensuremath{\rm \,Te\kern -0.08em V}}
%\def\mevc {\ensuremath{\rm \,Me\kern -0.08em V\!/c}} 
%\def\mevc {\ensuremath{{\rm \,Me\kern -0.08em V\!/}c}} 
%\def\gevcc{\ensuremath{\rm \,Ge\kern -0.08em V\!/c^2}} 
%\def\mevcc{\ensuremath{\rm \,Me\kern -0.08em V\!/c^2}} 
%\def\gevcc{\ensuremath{{\rm \,Ge\kern -0.08em V\!/}c^2}} 
%\def\mevcc{\ensuremath{{\rm \,Me\kern -0.08em V\!/}c^2}} 


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%% DISTANCE AND AREA %%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\syin {\ensuremath{^{\prime\prime}}\xspace}
\def\inch   {\ensuremath{\rm \,in}\xspace} % \in is taken
\def\ft   {\ensuremath{\rm \,ft}\xspace}
\def\km   {\ensuremath{\rm \,km}\xspace}
\def\m    {\ensuremath{\rm \,m}\xspace}
\def\cm   {\ensuremath{\rm \,cm}\xspace}
\def\cma  {\ensuremath{{\rm \,cm}^2}\xspace}
\def\mm   {\ensuremath{\rm \,mm}\xspace}
\def\mma  {\ensuremath{{\rm \,mm}^2}\xspace}
%\def\mum  {\ensuremath{\rm \,\mum}\xspace}
\def\mum  {\ensuremath{\,\mu\rm m}\xspace}%% mu meter 
%\def\muma {\ensuremath{\rm \,\mum}^2\xspace}
\def\muma       {\ensuremath{\,\mu\rm m^2}\xspace}
\def\nm   {\ensuremath{\rm \,nm}\xspace}
\def\fm   {\ensuremath{\rm \,fm}\xspace}
\def\nm         {\ensuremath{\rm \,nm}\xspace}   %% nanometer
\def\nb         {\ensuremath{\rm \,nb}\xspace}
%
\def\barn{\ensuremath{\rm \,b}\xspace}
\def\barnhyph{\ensuremath{\rm -b}\xspace}
\def\mbarn{\ensuremath{\rm \,mb}\xspace}
\def\mbarnhyph{\ensuremath{\rm -mb}\xspace}
\def\pb {\ensuremath{\rm \,pb}\xspace}
\def\invpb {\ensuremath{\mbox{\,pb}^{-1}}\xspace}
\def\fb   {\ensuremath{\mbox{\,fb}}\xspace}
\def\invfb   {\ensuremath{\mbox{\,fb}^{-1}}\xspace}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%% TIME AND MASS  %%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\mus  {\ensuremath{\rm \,\mus}\xspace}
\def\ns   {\ensuremath{\rm \,ns}\xspace}
\def\ps   {\ensuremath{\rm \,ps}\xspace}
\def\fs   {\ensuremath{\rm \,fs}\xspace}
\def\gm   {\ensuremath{\rm \,g}\xspace}

%%\def\s{\ensuremath{\rm {\,s}}} %% second - this displays nothing  - why?
\def\sec{\ensuremath{\rm {\,s}}\xspace}       %% second - this works - jw 4/19
\def\ms         {\ensuremath{{\rm \,ms}}\xspace}     %% millisecond
\def\mus        {\ensuremath{\,\mu{\rm s}}\xspace}    %% microsecond
\def\ns         {\ensuremath{{\rm \,ns}}\xspace}      %% nanosecond
\def\ps         {\ensuremath{{\rm \,ps}}\xspace}  %% picosecond


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%   MISCELLANEOUS %%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\def\Xrad {\ensuremath{X_0}\xspace}
\def\NIL{\ensuremath{\lambda_{int}}\xspace}
\let\dgr\degrees


%\def\m          {\ensuremath{\rm \,m}}    %% meter
%\def\ma         {\ensuremath{\rm \,m}^2}  %% meter squared
%\def\cm         {\ensuremath{\rm \,cm}}   %% centimeter
%\def\cma        {\ensuremath{\rm \,cm}^2} %% centimeter squared
\def\cms         {\ensuremath{{\rm \,cm}^{-2} {\rm s}^{-1}}\xspace}
%\def\mm         {\ensuremath{\rm \,mm}}   %% millimeter
%\def\mma        {\ensuremath{\rm \,mm}^2} %% millimeter squared
%\def\mum        {\ensuremath{\,\mu\rm m}} %% mu meter
%\def\muma       {\ensuremath{\,\mu\rm m^2}}


\def\mic  {\ensuremath{\,\mu{\rm C}}\xspace}
\def\krad {\ensuremath{\rm \,krad}\xspace}
\def\cmc  {\ensuremath{{\rm \,cm}^3}\xspace}
\def\yr   {\ensuremath{\rm \,yr}\xspace}
\def\hr   {\ensuremath{\rm \,hr}\xspace}
\def\degc {\ensuremath{^\circ}{C}\xspace}
\def\degk {\ensuremath {\rm K}\xspace}
\def\degrees{\ensuremath{^{\circ}}\xspace}
\def\mrad{\ensuremath{\rm \,mrad}\xspace}               %% milliradian
\def\rad{\ensuremath{\rm \,rad}\xspace}
\def\mradhyph{\ensuremath{\rm -mr}\xspace}
%
\def\sx    {\ensuremath{\sigma_x}\xspace}    
\def\sy    {\ensuremath{\sigma_y}\xspace}   
\def\sz    {\ensuremath{\sigma_z}\xspace}    

%\renewcommand{\bar}[1]{\overline{#1}}  

% Some more (from Helen)
%\def\O{{\ensuremath{\cal O}}}  !!! This is a predefined LaTeX symbol !!!
\def\order{{\ensuremath{\cal O}}\xspace}
\def\L{{\ensuremath{\cal L}}\xspace}
\def\calL{{\ensuremath{\cal L}}\xspace}
%\def\S{{\ensuremath{\cal S}}}  !!! This is a predefined LaTeX symbol !!!
\def\calS{{\ensuremath{\cal S}}\xspace}
\def\calA{{\ensuremath{\cal A}}\xspace}
\def\calD{{\ensuremath{\cal D}}\xspace}
\def\calR{{\ensuremath{\cal R}}\xspace}

%% Arrows:
\def\ra                 {\ensuremath{\rightarrow}\xspace}
\def\to                 {\ensuremath{\rightarrow}\xspace}


\newcommand{\stat}{\ensuremath{\mathrm{(stat)}}\xspace}
\newcommand{\syst}{\ensuremath{\mathrm{(syst)}}\xspace}


\def\pep2{PEP-II}
\def\BF{$B$ Factory}
\def\abf {asymmetric \BF}
\def\sx    {\ensuremath{\sigma_x}\xspace}     
\def\sy    {\ensuremath{\sigma_y}\xspace}   
\def\sz    {\ensuremath{\sigma_z}\xspace}


\newcommand{\inverse}{\ensuremath{^{-1}}\xspace}
\newcommand{\dedx}{\ensuremath{\mathrm{d}\hspace{-0.1em}E/\mathrm{d}x}\xspace}
\newcommand{\chisq}{\ensuremath{\chi^2}\xspace}
\newcommand{\delm}{\ensuremath{m_{\dstr}-m_{\dz}}\xspace}
\newcommand{\lum} {\ensuremath{\mathcal{L}}\xspace}

\def\gsim{{~\raise.15em\hbox{$>$}\kern-.85em
          \lower.35em\hbox{$\sim$}~}\xspace}
\def\lsim{{~\raise.15em\hbox{$<$}\kern-.85em
          \lower.35em\hbox{$\sim$}~}\xspace}

\def\qsq                {\ensuremath{q^2}\xspace}


% Data processing
\def\kbytes     {\ensuremath{{\rm \,kbytes}}\xspace}
\def\kbsps      {\ensuremath{{\rm \,kbytes/s}}\xspace}
\def\kbits      {\ensuremath{{\rm \,kbits}}\xspace}
\def\kbsps      {\ensuremath{{\rm \,kbits/s}}\xspace}
\def\mbsps      {\ensuremath{{\rm \,Mbits/s}}\xspace}
\def\mbytes     {\ensuremath{{\rm \,Mbytes}}\xspace}
\def\mbps       {\ensuremath{{\rm \,Mbyte/s}}\xspace}
\def\mbsps      {\ensuremath{{\rm \,Mbytes/s}}\xspace}
\def\gbsps      {\ensuremath{{\rm \,Gbits/s}}\xspace}
\def\gbytes     {\ensuremath{{\rm \,Gbytes}}\xspace}
\def\gbsps      {\ensuremath{{\rm \,Gbytes/s}}\xspace}
\def\tbytes     {\ensuremath{{\rm \,Tbytes}}\xspace}
\def\tbpy       {\ensuremath{{\rm \,Tbytes/yr}}\xspace}
%




% QCD parameters

\newcommand{\as}{\ensuremath{\alpha_{\scriptscriptstyle S}}\xspace}
\newcommand{\MSb}{\ensuremath{\overline{\mathrm{MS}}}\xspace}
\newcommand{\LMSb}{%
  \ensuremath{\Lambda_{\overline{\scriptscriptstyle\mathrm{MS}}}}\xspace
}

% Electroweak parameters

\newcommand{\tw}{\ensuremath{\theta_{\scriptscriptstyle W}}\xspace}
\newcommand{\twb}{%
  \ensuremath{\overline{\theta}_{\scriptscriptstyle W}}\xspace
}
\newcommand{\Afb}[1]{{\ensuremath{A_{\scriptscriptstyle FB}^{#1}}}\xspace}
\newcommand{\gv}[1]{{\ensuremath{g_{\scriptscriptstyle V}^{#1}}}\xspace}
\newcommand{\ga}[1]{{\ensuremath{g_{\scriptscriptstyle A}^{#1}}}\xspace}
\newcommand{\gvb}[1]{{\ensuremath{\overline{g}_{\scriptscriptstyle V}^{#1}}}\xspace}
\newcommand{\gab}[1]{{\ensuremath{\overline{g}_{\scriptscriptstyle A}^{#1}}}\xspace}


% CKM, CP violation

\def\eps{\varepsilon\xspace}
\def\epsK{\varepsilon_K\xspace}
\def\epsB{\varepsilon_B\xspace}
\def\epsp{\varepsilon^\prime_K\xspace}

\def\CP                {\ensuremath{C\!P}\xspace}
%\def\CPT               {\ensuremath{C\!P\!T}\xspace}
\def\CPT               {\ensuremath{C\!PT}\xspace} % Looks better without \!

\def\epstag  {\ensuremath{\varepsilon_{\rm tag}}\xspace}
\def\tagfac  {\ensuremath{\epstag(1-2w)^2}\xspace}

\def\rhobar {\ensuremath{\overline \rho}\xspace}
\def\etabar {\ensuremath{\overline \eta}\xspace}
%\def\paramest {\ensuremath{{\hat A}, {\hat \rho}, {\hat \eta} }}
%\def\ssparamest {\ensuremath{{\hat A}, {\hat {\sin 2 \alpha}}, 
%{\hat {\sin 2 \beta}} }}
\def\meas {\ensuremath{|V_{cb}|, |\frac{V_{ub}}{V_{cb}}|, 
|\varepsilon_K|, \Delta m_{B_d}}\xspace}

\def\Vud  {\ensuremath{|V_{ud}|}\xspace}
\def\Vcd  {\ensuremath{|V_{cd}|}\xspace}
\def\Vtd  {\ensuremath{|V_{td}|}\xspace}
\def\Vus  {\ensuremath{|V_{us}|}\xspace}
\def\Vcs  {\ensuremath{|V_{cs}|}\xspace}
\def\Vts  {\ensuremath{|V_{ts}|}\xspace}
\def\Vub  {\ensuremath{|V_{ub}|}\xspace}
\def\Vcb  {\ensuremath{|V_{cb}|}\xspace}
\def\Vtb  {\ensuremath{|V_{tb}|}\xspace}

%\def\sa{${\sin\! 2 \alpha  }$\xspace}
%\def\sb{${\sin\! 2 \beta   }$\xspace}
%\def\sg{${\sin\! 2 \gamma  }$\xspace}

% added by Gautier for tagging, tagmix, and sin2beta
\def\stwoa{\ensuremath{\sin\! 2 \alpha  }\xspace}
\def\stwob{\ensuremath{\sin\! 2 \beta   }\xspace}
\def\stwog{\ensuremath{\sin\! 2 \gamma  }\xspace}
\def\mistag{\ensuremath{w}\xspace}
\def\dilution{\ensuremath{\cal D}\xspace}
\def\deltaz{\ensuremath{{\rm \Delta}z}\xspace}
\def\deltat{\ensuremath{{\rm \Delta}t}\xspace}
\def\deltamd{\ensuremath{{\rm \Delta}m_d}\xspace}

\newcommand{\fsubd}{\ensuremath{f_D}}\xspace
\newcommand{\fds}{\ensuremath{f_{D_s}}\xspace}
\newcommand{\fsubb}{\ensuremath{f_B}\xspace}
\newcommand{\fbd}{\ensuremath{f_{B_d}}\xspace}
\newcommand{\fbs}{\ensuremath{f_{B_s}}\xspace}
\newcommand{\bsubb}{\ensuremath{B_B}\xspace}
\newcommand{\bbd}{\ensuremath{B_{B_d}}\xspace}
\newcommand{\bbs}{\ensuremath{B_{B_s}}\xspace}
\newcommand{\rgbb}{\ensuremath{\hat{B}_B}\xspace}
\newcommand{\rgbbd}{\ensuremath{\hat{B}_{B_d}}\xspace}
\newcommand{\rgbbs}{\ensuremath{\hat{B}_{B_s}}\xspace}
\newcommand{\rgbk}{\ensuremath{\hat{B}_K}\xspace}
\newcommand{\lqcd}{\ensuremath{\Lambda_{\mathrm{QCD}}}\xspace}

%\newcommand{\eqref}[1]{Eq.~(\ref{eq:#1})}
\newcommand{\secref}[1]{Section~\ref{sec:#1}}
\newcommand{\subsecref}[1]{Section~\ref{subsec:#1}}
\newcommand{\figref}[1]{Figure~\ref{fig:#1}}
\newcommand{\tabref}[1]{Table~\ref{tab:#1}}






% Journal References

% These bases are useful for ``submitted to'' when no volume is needed
\newcommand{\epjBase}        {Eur.\ Phys.\ Jour.\xspace}
\newcommand{\jprlBase}       {Phys.\ Rev.\ Lett.\xspace}
\newcommand{\jprBase}        {Phys.\ Rev.\xspace}
\newcommand{\jplBase}        {Phys.\ Lett.\xspace}
\newcommand{\nimBaseA}       {Nucl.\ Instr.\ Meth.\xspace}
\newcommand{\nimBaseB}       {Nucl.\ Instr.\ and Meth.\xspace}
\newcommand{\nimBaseC}       {Nucl.\ Instr.\ and Methods\xspace}
\newcommand{\nimBaseD}       {Nucl.\ Instrum.\ Methods\xspace}
\newcommand{\npBase}         {Nucl.\ Phys.\xspace}
\newcommand{\zpBase}         {Z.\ Phys.\xspace}


\newcommand{\apas}      [1]  {{Acta Phys.\ Austr.\ Suppl.\ {\bf #1}}}
\newcommand{\app}       [1]  {{Acta Phys.\ Polon.\ {\bf #1}}}
\newcommand{\ace}       [1]  {{Adv.\ Cry.\ Eng.\ {\bf #1}}}
\newcommand{\anp}       [1]  {{Adv.\ Nucl.\ Phys.\ {\bf #1}}}
\newcommand{\annp}      [1]  {{Ann.\ Phys.\ {\bf #1}}}
\newcommand{\araa}      [1]  {{Ann.\ Rev.\ Astr.\ Ap.\ {\bf #1}}}
\newcommand{\arnps}     [1]  {{Ann.\ Rev.\ Nucl.\ Part.\ Sci.\ {\bf #1}}}
\newcommand{\arns}      [1]  {{Ann.\ Rev.\ Nucl.\ Sci.\ {\bf #1}}}
\newcommand{\appopt}    [1]  {{Appl.\ Opt.\ {\bf #1}}}
\newcommand{\japj}      [1]  {{Astro.\ Phys.\ J.\ {\bf #1}}}
\newcommand{\baps}      [1]  {{Bull.\ Am.\ Phys.\ Soc.\ {\bf #1}}}
\newcommand{\seis}      [1]  {{Bull.\ Seismological Soc.\ of Am.\ {\bf #1}}}
\newcommand{\cmp}       [1]  {{Commun.\ Math.\ Phys.\ {\bf #1}}}
\newcommand{\cnpp}      [1]  {{Comm.\ Nucl.\ Part.\ Phys.\ {\bf #1}}}
\newcommand{\cpc}       [1]  {{Comput.\ Phys.\ Commun.\ {\bf #1}}}
\newcommand{\epj}       [1]  {\epjBase\ {\bf #1}}
%\newcommand{\epjc}      [1]  {{Eur.\ Phys.\ Jour.\ C~{\bf #1}}}
\newcommand{\epjc}      [1]  {\epjBase\ C~{\bf #1}}
\newcommand{\fizika}    [1]  {{Fizika~{\bf #1}}}
\newcommand{\fp}        [1]  {{Fortschr.\ Phys.\ {\bf #1}}}
\newcommand{\ited}      [1]  {{IEEE Trans.\ Electron.\ Devices~{\bf #1}}}
\newcommand{\itns}      [1]  {{IEEE Trans.\ Nucl.\ Sci.\ {\bf #1}}}
\newcommand{\ijqe}      [1]  {{IEEE J.\ Quantum Electron.\ {\bf #1}}}
\newcommand{\ijmp}      [1]  {{Int.\ Jour.\ Mod.\ Phys.\ {\bf #1}}}
\newcommand{\ijmpa}     [1]  {{Int.\ J.\ Mod.\ Phys.\ {\bf A{\bf #1}}}}
\newcommand{\jl}        [1]  {{JETP Lett.\ {\bf #1}}}
\newcommand{\jetp}      [1]  {{JETP~{\bf #1}}}
\newcommand{\jpg}       [1]  {{J.\ Phys.\ {\bf G{\bf #1}}}}
\newcommand{\jap}       [1]  {{J.\ Appl.\ Phys.\ {\bf #1}}}
\newcommand{\jmp}       [1]  {{J.\ Math.\ Phys.\ {\bf #1}}}
\newcommand{\jmes}      [1]  {{J.\ Micro.\ Elec.\ Sys.\ {\bf #1}}}
%\newcommand{\josa}      [1]  {{J.\ Opt.\ Soc.\ Am.\ {\bf #1}}}
\newcommand{\mpl}       [1]  {{Mod.\ Phys.\ Lett.\ {\bf #1}}}

%\newcommand{\nim}       [1]  {{Nucl.\ Instr.\ and Methods~{\bf #1}}}
\newcommand{\nim}       [1]  {\nimBaseC~{\bf #1}}
%\newcommand{\nima}      [1]  {{Nucl.\ Instr.\ Methods~{\bf A{\bf #1}}}}
\newcommand{\nima}      [1]  {\nimBaseA~A~{\bf #1}}

%\newcommand{\np}        [1]  {{Nucl.\ Phys.\ {\bf #1}}}
\newcommand{\np}        [1]  {\npBase\ {\bf #1}}
%\newcommand{\npb}       [1]  {{Nucl.\ Phys.\ {\bf B{\bf #1}}}}
\newcommand{\npb}       [1]  {\npBase\ B~{\bf #1}}
\newcommand{\npps}      [1]  {{Nucl.\ Phys.\ Proc.\ Suppl.\ {\bf #1}}}
\newcommand{\npaps}     [1]  {{Nucl.\ Phys.\ A~Proc.\ Suppl.\ {\bf #1}}}
\newcommand{\npbps}     [1]  {{Nucl.\ Phys.\ B~Proc.\ Suppl.\ {\bf #1}}}

\newcommand{\ncim}      [1]  {{Nuo.\ Cim.\ {\bf #1}}}
\newcommand{\optl}      [1]  {{Opt.\ Lett.\ {\bf #1}}}
\newcommand{\optcom}    [1]  {{Opt.\ Commun.\ {\bf #1}}}
\newcommand{\partacc}   [1]  {{Particle Acclerators~{\bf #1}}}
\newcommand{\pan}       [1]  {{Phys.\ Atom.\ Nuclei~{\bf #1}}}
\newcommand{\pflu}      [1]  {{Physics of Fluids~{\bf #1}}}
\newcommand{\ptoday}    [1]  {{Physics Today~{\bf #1}}}

%\newcommand{\jpl}       [1]  {{Phys.\ Lett.\ {\bf #1}}}      % dbm
\newcommand{\jpl}       [1]  {\jplBase\ {\bf #1}}
%\newcommand{\plb}       [1]  {{Phys.\ Lett.\ B~{\bf #1}}}   % dbm
\newcommand{\plb}       [1]  {\jplBase\ B~{\bf #1}}
\newcommand{\prep}      [1]  {{Phys.\ Rep.\ {\bf #1}}}
%\newcommand{\jprl}      [1]  {{Phys.\ Rev.\ Lett.\ {\bf #1}}} % dbm
\newcommand{\jprl}      [1]  {\jprlBase\ {\bf #1}}
%\newcommand{\pr}        [1]  {{Phys.\ Rev.\ {\bf #1}}}
\newcommand{\pr}        [1]  {\jprBase\ {\bf #1}}
%\newcommand{\jpra}      [1]  {{Phys.\ Rev.\ A~{\bf #1}}}
\newcommand{\jpra}      [1]  {\jprBase\ A~{\bf #1}}
%\newcommand{\jprd}      [1]  {{Phys.\ Rev.\ D~{\bf #1}}}
\newcommand{\jprd}      [1]  {\jprBase\ D~{\bf #1}}
%\newcommand{\jpre}      [1]  {{Phys.\ Rev.\ E~{\bf #1}}}
\newcommand{\jpre}      [1]  {\jprBase\ E~{\bf #1}}

\newcommand{\prsl}      [1]  {{Proc.\ Roy.\ Soc.\ Lond.\ {\bf #1}}}
\newcommand{\ppnp}      [1]  {{Prog.\ Part.\ Nucl.\ Phys.\ {\bf #1}}}
\newcommand{\progtp}    [1]  {{Prog.\ Th.\ Phys.\ {\bf #1}}}
\newcommand{\rpp}       [1]  {{Rep.\ Prog.\ Phys.\ {\bf #1}}}
\newcommand{\jrmp}      [1]  {{Rev.\ Mod.\ Phys.\ {\bf #1}}}  % dbm
\newcommand{\rsi}       [1]  {{Rev.\ Sci.\ Instr.\ {\bf #1}}}
\newcommand{\sci}       [1]  {{Science~{\bf #1}}}
\newcommand{\sjnp}      [1]  {{Sov.\ J.\ Nucl.\ Phys.\ {\bf #1}}}
\newcommand{\spd}       [1]  {{Sov.\ Phys.\ Dokl.\ {\bf #1}}}
\newcommand{\spu}       [1]  {{Sov.\ Phys.\ Usp.\ {\bf #1}}}
\newcommand{\tmf}       [1]  {{Teor.\ Mat.\ Fiz.\ {\bf #1}}}
\newcommand{\yf}        [1]  {{Yad.\ Fiz.\ {\bf #1}}}
%\newcommand{\zp}        [1]  {{Z.\ Phys.\ {\bf #1}}}
\newcommand{\zp}        [1]  {\zpBase\ {\bf #1}}
%\newcommand{\zpc}       [1]  {{Z.\ Phys.\ C~{\bf #1}}}
\newcommand{\zpc}       [1]  {\zpBase\ C~{\bf #1}}
\newcommand{\zpr}       [1]  {{ZhETF Pis.\ Red.\ {\bf #1}}}

\newcommand{\hepex}     [1]  {hep-ex/{#1}}
\newcommand{\hepph}     [1]  {hep-ph/{#1}}
\newcommand{\hepth}     [1]  {hep-th/{#1}}


%%%%%%%%%%%%%%%%%%%% SOFTWARE PACKAGES %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\def\aslund     {\mbox{\tt Aslund}\xspace}
\def\bbsim      {\mbox{\tt BBsim}\xspace}
\def\beast      {\mbox{\tt Beast}\xspace}
\def\beget      {\mbox{\tt Beget}\xspace}
\def\Bta        {\mbox{\tt Beta}\xspace}
\def\betakfit   {\mbox{\tt BetaKfit}\xspace}
\def\cornelius  {\mbox{\tt Cornelius}\xspace}
\def\evtgen     {\mbox{\tt EvtGen}\xspace}
\def\euclid     {\mbox{\tt Euclid}\xspace}
\def\fitver     {\mbox{\tt FitVer}\xspace}
\def\fluka      {\mbox{\tt Fluka}\xspace}
\def\fortran    {\mbox{\tt Fortran}\xspace}
\def\gcalor     {\mbox{\tt GCalor}\xspace}
\def\geant      {\mbox{\tt GEANT}\xspace}
\def\gheisha    {\mbox{\tt Gheisha}\xspace}
\def\hemicosm   {\mbox{\tt HemiCosm}\xspace}
\def\hepevt     {\mbox{\tt{/HepEvt/}}\xspace}
\def\jetset74   {\mbox{\tt Jetset \hspace{-0.5em}7.\hspace{-0.2em}4}\xspace}
%\def\jetset     {\mbox{\tt Jetset \hspace{-0.5em}7.\hspace{-0.2em}4}}
\def\koralb     {\mbox{\tt KoralB}\xspace}
\def\minuit     {\mbox{\tt Minuit}\xspace}
\def\objegs     {\mbox{\tt Objegs}\xspace}
\def\paw        {\mbox{\tt Paw}\xspace}
\def\Root       {\mbox{\tt Root}\xspace}
\def\squaw      {\mbox{\tt Squaw}\xspace}
\def\stdhep     {\mbox{\tt StdHep}\xspace}
\def\trackerr   {\mbox{\tt TrackErr}\xspace}
\def\turtle     {\mbox{\tt Decay~Turtle}\xspace}

% Results, input
\def\BRbztodstdstNum {\ensuremath{(8.3 \pm 1.6(stat) \pm
1.2(syst))\times 10^{-4}} \xspace}
\def\BRbztodstdst {\ensuremath{\BR(\Bztodstdst) = \BRbztodstdstNum}\xspace}
\def\BRbpmtodstdstzNum {\ensuremath{(10.5^{+3.3}_{-2.8}(stat) \pm
2.0(syst))\times 10^{-4}} \xspace}
\def\BRbpmtodstdstz {\ensuremath{\BR(\Bpmtodstdstz) = \BRbpmtodstdstzNum}\xspace}
\def\BRbztodstdNum {\ensuremath{(6.7^{+2.0}_{-1.7}(stat) \pm
1.1(syst))\times 10^{-4}} \xspace}
\def\BRbztodstd {\ensuremath{\BR(\Bztodstdcc) = \BRbztodstdNum}\xspace}


\def\NSideData {363 \xspace}
\def\NSigDataDstDstz {45 \xspace}
\def\NBkgDataDstDstz {\ensuremath{20.32 \pm 0.54 (stat) \pm 2.20 (syst)} \xspace}
\def\NSigDataDstDst {109 \xspace}
\def\NBkgDataDstDst {\ensuremath{18.7 \pm x.xx} \xspace}                                         
\def\NSigDataDstD {94 \xspace}
\def\NBkgDataDstD {\ensuremath{31.2 \pm x.xx (stat) \pm x.xx (syst)} \xspace}
\def\NSigData {\NSigDataDstDst}
\def\NBkgData {\NBkgDataDstDst}



\def\fsideVal {1.72 \xspace}
\def\fsideErr {0.10 \xspace}

% Data sample
\def\TotLumi {22.9\invfb \xspace}
\def\OnResLumi {20.7\invfb \xspace}
\def\OffResLumi {2.2\invfb \xspace}
\def\NBB {(22.515 \pm 0.360) \times 10^{6} \xspace}

% Cuts
\def\DelESig {25~\mev}
\def\mesLowSig {5.273~\gevcc}
\def\mesHiSig {5.285~\gevcc}
\def\DelELowSide {50~\mev}
\def\DelEHiSide {200~\mev}
\def\mesLowSide {5.200~\gevcc}
\def\mesMidSide {5.26~\gevcc}
\def\mesHiSide  {5.290~\gevcc}

% Particles
\def\Dstarp     {\ensuremath{D^{*+}}\xspace}
\def\Dstarm     {\ensuremath{D^{*-}}\xspace}
\def\Dstarpm    {\ensuremath{D^{*\pm}}\xspace}
\def\Dstarmp    {\ensuremath{D^{*\mp}}\xspace}
\def\Dp         {\ensuremath{D^+}\xspace}
\def\Dm         {\ensuremath{D^-}\xspace}

% Decay modes
\def\BtoDDbar	{\ensuremath{B \to D^{(*)} \Dbar^{(*)}}\xspace}
\def\BtoDDbaralt  {\ensuremath{B \to D^{(*)} \Dbar^{(*)(0)}}\xspace}
\def\BtoDsDbar	{\ensuremath{B \to D^{(*)}_S \Dbar^{(*)}}\xspace}
\def\BtoDsDbaralt {\ensuremath{B \to D^{(*)}_S \Dbar^{(*)(0)}}\xspace}
\def\BztoDDbar	{\ensuremath{B^0 \to D^{(*)+} \Dbar^{(*)-}}\xspace}
\def\BpmtoDDbar	{\ensuremath{B^{\pm} \to D^{(*)\pm} \Dbar^{(*)0}}\xspace}
\def\Bpmtodstdstz {\ensuremath{B^{\pm} \to D^{*\pm} D^{*0}}\xspace}
\def\Bztodstdcc {\ensuremath{B^{0} \to D^{*\pm} D^{\mp}}\xspace}
\def\Bzbptodstdcc {\ensuremath{\stackrel{(-)}{B^0} \to D^{*\pm} D^{\mp}}\xspace}
\def\Bztodstpdm {\ensuremath{B^{0} \to D^{*+} D^{-}}\xspace}
\def\Bztodstmdp {\ensuremath{B^{0} \to D^{*-} D^{+}}\xspace}
\def\Bzbptodstpdm {\ensuremath{\stackrel{(-)}{B^0} \to D^{*+} D^{-}}\xspace}
\def\Bzbptodstmdp {\ensuremath{\stackrel{(-)}{B^0} \to D^{*-} D^{+}}\xspace}
\def\DDbar  {\ensuremath{D^{(*)+} D^{(*)-}}\xspace}

\def\Dstptopip  {\ensuremath{\Dstarp \to \Dz\pip}\xspace}
\def\Dstptopiz  {\ensuremath{\Dstarp \to \Dp\piz}\xspace}
\def\Dstztopiz  {\ensuremath{\Dstarz \to \Dz\piz}\xspace}
\def\Dstztogam  {\ensuremath{\Dstarz \to \Dz\gamma}\xspace}

% D0 modes
\def\Kpi {\ensuremath{K \pi}\xspace}
\def\Kpipipi {\ensuremath{K 3\pi}\xspace}
\def\Kpipiz {\ensuremath{K \pi \piz}\xspace}
\def\Kspipi {\ensuremath{\KS \pi \pi}\xspace}
% D+ modes
\def\Kpipi {\ensuremath{K \pi \pi}\xspace}
\def\Kspi  {\ensuremath{\KS \pi}\xspace}
\def\KKpi  {\ensuremath{K K \pi}\xspace}
\def\Kspipiz {\ensuremath{\KS \pi \piz}\xspace}

% Misc symbols
\def\DeltaE     {\ensuremath{\Delta E^{\prime}} \xspace}
\def\DeltaEStd  {\ensuremath{\Delta E} \xspace}
\def\SsqovSpB   {\ensuremath{S^2/(S+B)}\xspace}
\def\fside      {\ensuremath{f_{Side}}\xspace}
\def\chisqM     {\ensuremath{\chi^2_{Mass}}\xspace}
\def\effBr      {\ensuremath{\epsilon \BR}\xspace}
\def\masslik    {\ensuremath{{\cal L}_{Mass}}\xspace}


% Set the following numbers to the correct values for your paper
\newcommand{\BABARPubYear}    {03}
\newcommand{\BABARPubNumber}  {004}
\newcommand{\BABARProcNumber} {XX}
\newcommand{\SLACPubNumber} {9661}
\newcommand{\LANLNumber} {0303004}

\def\figurebox#1#2#3{%
    \def\arg{#3}%
    \ifx\arg\empty
    {\hfill\vbox{\hsize#2\hrule\hbox to #2{\vrule\hfill\vbox to #1{\hsize#2\vfill}\vrule}\hrule}\hfill}%
    \else
    {\hfill\epsfbox{#3}\hfill}%
    \fi}

\begin{document}

\preprint{\babar-PUB-\BABARPubYear/\BABARPubNumber} 
\preprint{SLAC-PUB-\SLACPubNumber} 

\begin{flushleft}
\babar-PUB-\BABARPubYear/\BABARPubNumber\\
SLAC-PUB-\SLACPubNumber\\
hep-ex/\LANLNumber\\[10mm]
\end{flushleft}

\title{
{\Large \bf \boldmath
Measurement of the Branching Fraction and \CP-violating Asymmetries in 
%\Bztodstdcc decays
Neutral $B$ Decays to $D^{*\pm}D^{\mp}$
}}

% Dummy author list; contact PubBoard Chair for current author list
%\input authors
%% author list as of 01-Jan-2003 (551 authors)
%
\author{B.~Aubert}
\author{R.~Barate}
\author{D.~Boutigny}
\author{J.-M.~Gaillard}
\author{A.~Hicheur}
\author{Y.~Karyotakis}
\author{J.~P.~Lees}
\author{P.~Robbe}
\author{V.~Tisserand}
\author{A.~Zghiche}
\affiliation{Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux, France }
\author{A.~Palano}
\author{A.~Pompili}
\affiliation{Universit\`a di Bari, Dipartimento di Fisica and INFN, I-70126 Bari, Italy }
\author{J.~C.~Chen}
\author{N.~D.~Qi}
\author{G.~Rong}
\author{P.~Wang}
\author{Y.~S.~Zhu}
\affiliation{Institute of High Energy Physics, Beijing 100039, China }
\author{G.~Eigen}
\author{I.~Ofte}
\author{B.~Stugu}
\affiliation{University of Bergen, Inst.\ of Physics, N-5007 Bergen, Norway }
\author{G.~S.~Abrams}
\author{A.~W.~Borgland}
\author{A.~B.~Breon}
\author{D.~N.~Brown}
\author{J.~Button-Shafer}
\author{R.~N.~Cahn}
\author{E.~Charles}
\author{M.~S.~Gill}
\author{A.~V.~Gritsan}
\author{Y.~Groysman}
\author{R.~G.~Jacobsen}
\author{R.~W.~Kadel}
\author{J.~Kadyk}
\author{L.~T.~Kerth}
\author{Yu.~G.~Kolomensky}
\author{J.~F.~Kral}
\author{G.~Kukartsev}
\author{C.~LeClerc}
\author{M.~E.~Levi}
\author{G.~Lynch}
\author{L.~M.~Mir}
\author{P.~J.~Oddone}
\author{T.~J.~Orimoto}
\author{M.~Pripstein}
\author{N.~A.~Roe}
\author{A.~Romosan}
\author{M.~T.~Ronan}
\author{V.~G.~Shelkov}
\author{A.~V.~Telnov}
\author{W.~A.~Wenzel}
\affiliation{Lawrence Berkeley National Laboratory and University of California, Berkeley, CA 94720, USA }
\author{T.~J.~Harrison}
\author{C.~M.~Hawkes}
\author{D.~J.~Knowles}
\author{R.~C.~Penny}
\author{A.~T.~Watson}
\author{N.~K.~Watson}
\affiliation{University of Birmingham, Birmingham, B15 2TT, United Kingdom }
\author{T.~Deppermann}
\author{K.~Goetzen}
\author{H.~Koch}
\author{B.~Lewandowski}
\author{M.~Pelizaeus}
\author{K.~Peters}
\author{H.~Schmuecker}
\author{M.~Steinke}
\affiliation{Ruhr Universit\"at Bochum, Institut f\"ur Experimentalphysik 1, D-44780 Bochum, Germany }
\author{N.~R.~Barlow}
\author{W.~Bhimji}
\author{J.~T.~Boyd}
\author{N.~Chevalier}
\author{P.~J.~Clark}
\author{W.~N.~Cottingham}
\author{C.~Mackay}
\author{F.~F.~Wilson}
\affiliation{University of Bristol, Bristol BS8 1TL, United Kingdom }
\author{C.~Hearty}
\author{T.~S.~Mattison}
\author{J.~A.~McKenna}
\author{D.~Thiessen}
\affiliation{University of British Columbia, Vancouver, BC, Canada V6T 1Z1 }
\author{P.~Kyberd}
\author{A.~K.~McKemey}
\affiliation{Brunel University, Uxbridge, Middlesex UB8 3PH, United Kingdom }
\author{V.~E.~Blinov}
\author{A.~D.~Bukin}
\author{V.~B.~Golubev}
\author{V.~N.~Ivanchenko}
\author{E.~A.~Kravchenko}
\author{A.~P.~Onuchin}
\author{S.~I.~Serednyakov}
\author{Yu.~I.~Skovpen}
\author{E.~P.~Solodov}
\author{A.~N.~Yushkov}
\affiliation{Budker Institute of Nuclear Physics, Novosibirsk 630090, Russia }
\author{D.~Best}
\author{M.~Chao}
\author{D.~Kirkby}
\author{A.~J.~Lankford}
\author{M.~Mandelkern}
\author{S.~McMahon}
\author{R.~K.~Mommsen}
\author{W.~Roethel}
\author{D.~P.~Stoker}
\affiliation{University of California at Irvine, Irvine, CA 92697, USA }
\author{C.~Buchanan}
\affiliation{University of California at Los Angeles, Los Angeles, CA 90024, USA }
\author{H.~K.~Hadavand}
\author{E.~J.~Hill}
\author{D.~B.~MacFarlane}
\author{H.~P.~Paar}
\author{Sh.~Rahatlou}
\author{U.~Schwanke}
\author{V.~Sharma}
\affiliation{University of California at San Diego, La Jolla, CA 92093, USA }
\author{J.~W.~Berryhill}
\author{C.~Campagnari}
\author{B.~Dahmes}
\author{N.~Kuznetsova}
\author{S.~L.~Levy}
\author{O.~Long}
\author{A.~Lu}
\author{M.~A.~Mazur}
\author{J.~D.~Richman}
\author{W.~Verkerke}
\affiliation{University of California at Santa Barbara, Santa Barbara, CA 93106, USA }
\author{J.~Beringer}
\author{A.~M.~Eisner}
\author{C.~A.~Heusch}
\author{W.~S.~Lockman}
\author{T.~Schalk}
\author{R.~E.~Schmitz}
\author{B.~A.~Schumm}
\author{A.~Seiden}
\author{M.~Turri}
\author{W.~Walkowiak}
\author{D.~C.~Williams}
\author{M.~G.~Wilson}
\affiliation{University of California at Santa Cruz, Institute for Particle Physics, Santa Cruz, CA 95064, USA }
\author{J.~Albert}
\author{E.~Chen}
\author{G.~P.~Dubois-Felsmann}
\author{A.~Dvoretskii}
\author{D.~G.~Hitlin}
\author{I.~Narsky}
\author{F.~C.~Porter}
\author{A.~Ryd}
\author{A.~Samuel}
\author{S.~Yang}
\affiliation{California Institute of Technology, Pasadena, CA 91125, USA }
\author{S.~Jayatilleke}
\author{G.~Mancinelli}
\author{B.~T.~Meadows}
\author{M.~D.~Sokoloff}
\affiliation{University of Cincinnati, Cincinnati, OH 45221, USA }
\author{T.~Barillari}
\author{F.~Blanc}
\author{P.~Bloom}
\author{W.~T.~Ford}
\author{U.~Nauenberg}
\author{A.~Olivas}
\author{P.~Rankin}
\author{J.~Roy}
\author{J.~G.~Smith}
\author{W.~C.~van Hoek}
\author{L.~Zhang}
\affiliation{University of Colorado, Boulder, CO 80309, USA }
\author{J.~L.~Harton}
\author{T.~Hu}
\author{A.~Soffer}
\author{W.~H.~Toki}
\author{R.~J.~Wilson}
\author{J.~Zhang}
\affiliation{Colorado State University, Fort Collins, CO 80523, USA }
\author{D.~Altenburg}
\author{T.~Brandt}
\author{J.~Brose}
\author{T.~Colberg}
\author{M.~Dickopp}
\author{R.~S.~Dubitzky}
\author{A.~Hauke}
\author{H.~M.~Lacker}
\author{E.~Maly}
\author{R.~M\"uller-Pfefferkorn}
\author{R.~Nogowski}
\author{S.~Otto}
\author{K.~R.~Schubert}
\author{R.~Schwierz}
\author{B.~Spaan}
\author{L.~Wilden}
\affiliation{Technische Universit\"at Dresden, Institut f\"ur Kern- und Teilchenphysik, D-01062 Dresden, Germany }
\author{D.~Bernard}
\author{G.~R.~Bonneaud}
\author{F.~Brochard}
\author{J.~Cohen-Tanugi}
\author{S.~T'Jampens}
\author{Ch.~Thiebaux}
\author{G.~Vasileiadis}
\author{M.~Verderi}
\affiliation{Ecole Polytechnique, LLR, F-91128 Palaiseau, France }
\author{R.~Bernet}
\author{A.~Khan}
\author{D.~Lavin}
\author{F.~Muheim}
\author{S.~Playfer}
\author{J.~E.~Swain}
\author{J.~Tinslay}
\affiliation{University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom }
\author{C.~Borean}
\author{C.~Bozzi}
\author{L.~Piemontese}
\author{A.~Sarti}
\affiliation{Universit\`a di Ferrara, Dipartimento di Fisica and INFN, I-44100 Ferrara, Italy  }
\author{E.~Treadwell}
\affiliation{Florida A\&M University, Tallahassee, FL 32307, USA }
\author{F.~Anulli}\altaffiliation{Also with Universit\`a di Perugia, Perugia, Italy }
\author{R.~Baldini-Ferroli}
\author{A.~Calcaterra}
\author{R.~de Sangro}
\author{D.~Falciai}
\author{G.~Finocchiaro}
\author{P.~Patteri}
\author{I.~M.~Peruzzi}\altaffiliation{Also with Universit\`a di Perugia, Perugia, Italy }
\author{M.~Piccolo}
\author{A.~Zallo}
\affiliation{Laboratori Nazionali di Frascati dell'INFN, I-00044 Frascati, Italy }
\author{A.~Buzzo}
\author{R.~Contri}
\author{G.~Crosetti}
\author{M.~Lo Vetere}
\author{M.~Macri}
\author{M.~R.~Monge}
\author{S.~Passaggio}
\author{F.~C.~Pastore}
\author{C.~Patrignani}
\author{E.~Robutti}
\author{A.~Santroni}
\author{S.~Tosi}
\affiliation{Universit\`a di Genova, Dipartimento di Fisica and INFN, I-16146 Genova, Italy }
\author{S.~Bailey}
\author{M.~Morii}
\affiliation{Harvard University, Cambridge, MA 02138, USA }
\author{G.~J.~Grenier}
\author{S.-J.~Lee}
\author{U.~Mallik}
\affiliation{University of Iowa, Iowa City, IA 52242, USA }
\author{J.~Cochran}
\author{H.~B.~Crawley}
\author{J.~Lamsa}
\author{W.~T.~Meyer}
\author{S.~Prell}
\author{E.~I.~Rosenberg}
\author{J.~Yi}
\affiliation{Iowa State University, Ames, IA 50011-3160, USA }
\author{M.~Davier}
\author{G.~Grosdidier}
\author{A.~H\"ocker}
\author{S.~Laplace}
\author{F.~Le Diberder}
\author{V.~Lepeltier}
\author{A.~M.~Lutz}
\author{T.~C.~Petersen}
\author{S.~Plaszczynski}
\author{M.~H.~Schune}
\author{L.~Tantot}
\author{G.~Wormser}
\affiliation{Laboratoire de l'Acc\'el\'erateur Lin\'eaire, F-91898 Orsay, France }
\author{R.~M.~Bionta}
\author{V.~Brigljevi\'c }
\author{C.~H.~Cheng}
\author{D.~J.~Lange}
\author{D.~M.~Wright}
\affiliation{Lawrence Livermore National Laboratory, Livermore, CA 94550, USA }
\author{A.~J.~Bevan}
\author{J.~R.~Fry}
\author{E.~Gabathuler}
\author{R.~Gamet}
\author{M.~Kay}
\author{D.~J.~Payne}
\author{R.~J.~Sloane}
\author{C.~Touramanis}
\affiliation{University of Liverpool, Liverpool L69 3BX, United Kingdom }
\author{M.~L.~Aspinwall}
\author{D.~A.~Bowerman}
\author{P.~D.~Dauncey}
\author{U.~Egede}
\author{I.~Eschrich}
\author{G.~W.~Morton}
\author{J.~A.~Nash}
\author{P.~Sanders}
\author{G.~P.~Taylor}
\affiliation{University of London, Imperial College, London, SW7 2BW, United Kingdom }
\author{J.~J.~Back}
\author{G.~Bellodi}
\author{P.~F.~Harrison}
\author{H.~W.~Shorthouse}
\author{P.~Strother}
\author{P.~B.~Vidal}
\affiliation{Queen Mary, University of London, E1 4NS, United Kingdom }
\author{G.~Cowan}
\author{H.~U.~Flaecher}
\author{S.~George}
\author{M.~G.~Green}
\author{A.~Kurup}
\author{C.~E.~Marker}
\author{T.~R.~McMahon}
\author{S.~Ricciardi}
\author{F.~Salvatore}
\author{G.~Vaitsas}
\author{M.~A.~Winter}
\affiliation{University of London, Royal Holloway and Bedford New College, Egham, Surrey TW20 0EX, United Kingdom }
\author{D.~Brown}
\author{C.~L.~Davis}
\affiliation{University of Louisville, Louisville, KY 40292, USA }
\author{J.~Allison}
\author{R.~J.~Barlow}
\author{A.~C.~Forti}
\author{P.~A.~Hart}
\author{F.~Jackson}
\author{G.~D.~Lafferty}
\author{A.~J.~Lyon}
\author{J.~H.~Weatherall}
\author{J.~C.~Williams}
\affiliation{University of Manchester, Manchester M13 9PL, United Kingdom }
\author{A.~Farbin}
\author{A.~Jawahery}
\author{D.~Kovalskyi}
\author{C.~K.~Lae}
\author{V.~Lillard}
\author{D.~A.~Roberts}
\affiliation{University of Maryland, College Park, MD 20742, USA }
\author{G.~Blaylock}
\author{C.~Dallapiccola}
\author{K.~T.~Flood}
\author{S.~S.~Hertzbach}
\author{R.~Kofler}
\author{V.~B.~Koptchev}
\author{T.~B.~Moore}
\author{H.~Staengle}
\author{S.~Willocq}
\author{J.~Winterton}
\affiliation{University of Massachusetts, Amherst, MA 01003, USA }
\author{R.~Cowan}
\author{G.~Sciolla}
\author{F.~Taylor}
\author{R.~K.~Yamamoto}
\affiliation{Massachusetts Institute of Technology, Laboratory for Nuclear Science, Cambridge, MA 02139, USA }
\author{D.~J.~J.~Mangeol}
\author{M.~Milek}
\author{P.~M.~Patel}
\affiliation{McGill University, Montr\'eal, QC, Canada H3A 2T8 }
\author{F.~Palombo}
\affiliation{Universit\`a di Milano, Dipartimento di Fisica and INFN, I-20133 Milano, Italy }
\author{J.~M.~Bauer}
\author{L.~Cremaldi}
\author{V.~Eschenburg}
\author{R.~Kroeger}
\author{J.~Reidy}
\author{D.~A.~Sanders}
\author{D.~J.~Summers}
\author{H.~W.~Zhao}
\affiliation{University of Mississippi, University, MS 38677, USA }
\author{C.~Hast}
\author{P.~Taras}
\affiliation{Universit\'e de Montr\'eal, Laboratoire Ren\'e J.~A.~L\'evesque, Montr\'eal, QC, Canada H3C 3J7  }
\author{H.~Nicholson}
\affiliation{Mount Holyoke College, South Hadley, MA 01075, USA }
\author{C.~Cartaro}
\author{N.~Cavallo}
\author{G.~De Nardo}
\author{F.~Fabozzi}\altaffiliation{Also with Universit\`a della Basilicata, Potenza, Italy }
\author{C.~Gatto}
\author{L.~Lista}
\author{P.~Paolucci}
\author{D.~Piccolo}
\author{C.~Sciacca}
\affiliation{Universit\`a di Napoli Federico II, Dipartimento di Scienze Fisiche and INFN, I-80126, Napoli, Italy }
\author{M.~A.~Baak}
\author{G.~Raven}
\affiliation{NIKHEF, National Institute for Nuclear Physics and High Energy Physics, 1009 DB Amsterdam, The Netherlands }
\author{J.~M.~LoSecco}
\affiliation{University of Notre Dame, Notre Dame, IN 46556, USA }
\author{T.~A.~Gabriel}
\affiliation{Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA }
\author{B.~Brau}
\author{T.~Pulliam}
\affiliation{Ohio State University, Columbus, OH 43210, USA }
\author{J.~Brau}
\author{R.~Frey}
\author{M.~Iwasaki}
\author{C.~T.~Potter}
\author{N.~B.~Sinev}
\author{D.~Strom}
\author{E.~Torrence}
\affiliation{University of Oregon, Eugene, OR 97403, USA }
\author{F.~Colecchia}
\author{A.~Dorigo}
\author{F.~Galeazzi}
\author{M.~Margoni}
\author{M.~Morandin}
\author{M.~Posocco}
\author{M.~Rotondo}
\author{F.~Simonetto}
\author{R.~Stroili}
\author{G.~Tiozzo}
\author{C.~Voci}
\affiliation{Universit\`a di Padova, Dipartimento di Fisica and INFN, I-35131 Padova, Italy }
\author{M.~Benayoun}
\author{H.~Briand}
\author{J.~Chauveau}
\author{P.~David}
\author{Ch.~de la Vaissi\`ere}
\author{L.~Del Buono}
\author{O.~Hamon}
\author{Ph.~Leruste}
\author{J.~Ocariz}
\author{M.~Pivk}
\author{L.~Roos}
\author{J.~Stark}
\affiliation{Universit\'es Paris VI et VII, Lab de Physique Nucl\'eaire H.~E., F-75252 Paris, France }
\author{P.~F.~Manfredi}
\author{V.~Re}
\affiliation{Universit\`a di Pavia, Dipartimento di Elettronica and INFN, I-27100 Pavia, Italy }
\author{L.~Gladney}
\author{Q.~H.~Guo}
\author{J.~Panetta}
\affiliation{University of Pennsylvania, Philadelphia, PA 19104, USA }
\author{C.~Angelini}
\author{G.~Batignani}
\author{S.~Bettarini}
\author{M.~Bondioli}
\author{F.~Bucci}
\author{G.~Calderini}
\author{M.~Carpinelli}
\author{F.~Forti}
\author{M.~A.~Giorgi}
\author{A.~Lusiani}
\author{G.~Marchiori}
\author{F.~Martinez-Vidal}
\author{M.~Morganti}
\author{N.~Neri}
\author{E.~Paoloni}
\author{M.~Rama}
\author{G.~Rizzo}
\author{F.~Sandrelli}
\author{G.~Triggiani}
\author{J.~Walsh}
\affiliation{Universit\`a di Pisa, Dipartimento di fisica, Scuola Normale Superiore and INFN, I-56010 Pisa, Italy }
\author{M.~Haire}
\author{D.~Judd}
\author{K.~Paick}
\author{D.~E.~Wagoner}
\affiliation{Prairie View A\&M University, Prairie View, TX 77446, USA }
\author{N.~Danielson}
\author{P.~Elmer}
\author{C.~Lu}
\author{V.~Miftakov}
\author{J.~Olsen}
\author{A.~J.~S.~Smith}
\author{E.~W.~Varnes}
\affiliation{Princeton University, Princeton, NJ 08544, USA }
\author{F.~Bellini}
\affiliation{Universit\`a di Roma La Sapienza, Dipartimento di Fisica and INFN, I-00185 Roma, Italy }
\author{G.~Cavoto}
\affiliation{Princeton University, Princeton, NJ 08544, USA }
\affiliation{Universit\`a di Roma La Sapienza, Dipartimento di Fisica and INFN, I-00185 Roma, Italy }
\author{D.~del Re}
\affiliation{Universit\`a di Roma La Sapienza, Dipartimento di Fisica and INFN, I-00185 Roma, Italy }
\author{R.~Faccini}
\affiliation{University of California at San Diego, La Jolla, CA 92093, USA }
\affiliation{Universit\`a di Roma La Sapienza, Dipartimento di Fisica and INFN, I-00185 Roma, Italy }
\author{F.~Ferrarotto}
\author{F.~Ferroni}
\author{M.~Gaspero}
\author{E.~Leonardi}
\author{M.~A.~Mazzoni}
\author{S.~Morganti}
\author{M.~Pierini}
\author{G.~Piredda}
\author{F.~Safai Tehrani}
\author{M.~Serra}
\author{C.~Voena}
\affiliation{Universit\`a di Roma La Sapienza, Dipartimento di Fisica and INFN, I-00185 Roma, Italy }
\author{S.~Christ}
\author{G.~Wagner}
\author{R.~Waldi}
\affiliation{Universit\"at Rostock, D-18051 Rostock, Germany }
\author{T.~Adye}
\author{N.~De Groot}
\author{B.~Franek}
\author{N.~I.~Geddes}
\author{G.~P.~Gopal}
\author{E.~O.~Olaiya}
\author{S.~M.~Xella}
\affiliation{Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, United Kingdom }
\author{R.~Aleksan}
\author{S.~Emery}
\author{A.~Gaidot}
\author{S.~F.~Ganzhur}
\author{P.-F.~Giraud}
\author{G.~Hamel de Monchenault}
\author{W.~Kozanecki}
\author{M.~Langer}
\author{G.~W.~London}
\author{B.~Mayer}
\author{G.~Schott}
\author{G.~Vasseur}
\author{Ch.~Yeche}
\author{M.~Zito}
\affiliation{DAPNIA, Commissariat \`a l'Energie Atomique/Saclay, F-91191 Gif-sur-Yvette, France }
\author{M.~V.~Purohit}
\author{A.~W.~Weidemann}
\author{F.~X.~Yumiceva}
\affiliation{University of South Carolina, Columbia, SC 29208, USA }
\author{D.~Aston}
\author{R.~Bartoldus}
\author{N.~Berger}
\author{A.~M.~Boyarski}
\author{O.~L.~Buchmueller}
\author{M.~R.~Convery}
\author{D.~P.~Coupal}
\author{D.~Dong}
\author{J.~Dorfan}
\author{W.~Dunwoodie}
\author{R.~C.~Field}
\author{T.~Glanzman}
\author{S.~J.~Gowdy}
\author{E.~Grauges-Pous}
\author{T.~Hadig}
\author{V.~Halyo}
\author{T.~Hryn'ova}
\author{W.~R.~Innes}
\author{C.~P.~Jessop}
\author{M.~H.~Kelsey}
\author{P.~Kim}
\author{M.~L.~Kocian}
\author{U.~Langenegger}
\author{D.~W.~G.~S.~Leith}
\author{S.~Luitz}
\author{V.~Luth}
\author{H.~L.~Lynch}
\author{H.~Marsiske}
\author{S.~Menke}
\author{R.~Messner}
\author{D.~R.~Muller}
\author{C.~P.~O'Grady}
\author{V.~E.~Ozcan}
\author{A.~Perazzo}
\author{M.~Perl}
\author{S.~Petrak}
\author{B.~N.~Ratcliff}
\author{S.~H.~Robertson}
\author{A.~Roodman}
\author{A.~A.~Salnikov}
\author{T.~Schietinger}
\author{R.~H.~Schindler}
\author{J.~Schwiening}
\author{G.~Simi}
\author{A.~Snyder}
\author{A.~Soha}
\author{J.~Stelzer}
\author{D.~Su}
\author{M.~K.~Sullivan}
\author{H.~A.~Tanaka}
\author{J.~Va'vra}
\author{S.~R.~Wagner}
\author{M.~Weaver}
\author{A.~J.~R.~Weinstein}
\author{W.~J.~Wisniewski}
\author{D.~H.~Wright}
\author{C.~C.~Young}
\affiliation{Stanford Linear Accelerator Center, Stanford, CA 94309, USA }
\author{P.~R.~Burchat}
\author{T.~I.~Meyer}
\author{C.~Roat}
\affiliation{Stanford University, Stanford, CA 94305-4060, USA }
\author{S.~Ahmed}
\affiliation{State Univ.\ of New York, Albany, NY 12222, USA }
\author{W.~Bugg}
\author{M.~Krishnamurthy}
\author{S.~M.~Spanier}
\affiliation{University of Tennessee, Knoxville, TN 37996, USA }
\author{R.~Eckmann}
\author{H.~Kim}
\author{J.~L.~Ritchie}
\author{R.~F.~Schwitters}
\affiliation{University of Texas at Austin, Austin, TX 78712, USA }
\author{J.~M.~Izen}
\author{I.~Kitayama}
\author{X.~C.~Lou}
\affiliation{University of Texas at Dallas, Richardson, TX 75083, USA }
\author{F.~Bianchi}
\author{M.~Bona}
\author{D.~Gamba}
\affiliation{Universit\`a di Torino, Dipartimento di Fisica Sperimentale and INFN, I-10125 Torino, Italy }
\author{L.~Bosisio}
\author{G.~Della Ricca}
\author{S.~Dittongo}
\author{S.~Grancagnolo}
\author{L.~Lanceri}
\author{P.~Poropat}\thanks{Deceased}
\author{L.~Vitale}
\author{G.~Vuagnin}
\affiliation{Universit\`a di Trieste, Dipartimento di Fisica and INFN, I-34127 Trieste, Italy }
\author{R.~S.~Panvini}
\affiliation{Vanderbilt University, Nashville, TN 37235, USA }
\author{Sw.~Banerjee}
\author{C.~M.~Brown}
\author{D.~Fortin}
\author{P.~D.~Jackson}
\author{R.~Kowalewski}
\author{J.~M.~Roney}
\affiliation{University of Victoria, Victoria, BC, Canada V8W 3P6 }
\author{H.~R.~Band}
\author{S.~Dasu}
\author{M.~Datta}
\author{A.~M.~Eichenbaum}
\author{H.~Hu}
\author{J.~R.~Johnson}
\author{R.~Liu}
\author{F.~Di~Lodovico}
\author{A.~K.~Mohapatra}
\author{Y.~Pan}
\author{R.~Prepost}
\author{S.~J.~Sekula}
\author{J.~H.~von Wimmersperg-Toeller}
\author{J.~Wu}
\author{S.~L.~Wu}
\author{Z.~Yu}
\affiliation{University of Wisconsin, Madison, WI 53706, USA }
\author{H.~Neal}
\affiliation{Yale University, New Haven, CT 06511, USA }
\collaboration{The \babar\ Collaboration}
\noaffiliation


\date{\today}% It is always \today, today, but you may specify any date with \date.

\begin{abstract}
%We present a measurement of the branching fraction of and \CP-violating asymmetries in the decay \Bztodstdcc.
We present measurements of the branching fraction and \CP-violating asymmetries for
neutral $B$ decays to $D^{*\pm}D^{\mp}$.
%neutral $B$ decays to the final states $D^{*-}D^{+}$ and $D^{*+}D^{-}$.
%, with the underlying quark process $b \to c\bar{c}d$.  
The measurement uses a data sample of approximately 88 million \Y4S $\to$ \BB decays
collected with the \babar\ detector at the SLAC PEP-II asymmetric-energy $e^{+}$-$e^{-}$ collider.  By fully reconstructing the
$D^{*\pm}D^{\mp}$ decay products, we measure the
branching fraction to be $(8.8 \pm 1.0 \pm 1.3) \times 10^{-4}$
and the time-integrated \CP-violating asymmetry between the rates to $D^{*-}D^{+}$ and $D^{*+}D^{-}$ to be
$\mathcal{A} = -0.03 \pm 0.11 \pm 0.05$.  We also measure the
time-dependent \CP-violating asymmetry parameters to be $S_{\scriptscriptstyle -+} = -0.24 \pm 0.69 \pm 0.12$, 
$C_{\scriptscriptstyle -+} = -0.22 \pm  0.37 \pm 0.10$ for $B \to D^{*-}D^{+}$ and $S_{\scriptscriptstyle +-} = -0.82 \pm 0.75 \pm 0.14$, 
$C_{\scriptscriptstyle +-} = -0.47 \pm 0.40 \pm 0.12$ for $B \to D^{*+}D^{-}$.
%the first errors are statistical and the second are systematic.
In each case the first error is statistical and the second error is systematic.
\end{abstract}

\pacs{13.25.Hw, 12.15.Hh, 11.30.Er}% PACS, the Physics and Astronomy Classification Scheme.

\maketitle


Within the Standard Model (SM) of electroweak interactions, \CP violation is the result of a complex phase 
in $V$, the Cabbibo-Kobayashi-Maskawa (CKM) quark mixing matrix~\cite{CKM}.  
In the SM, the time-dependent \CP-violating asymmetries in 
%neutral $B$ to $D^{*\pm}D^{\mp}$ 
$B \to D^{*\pm}D^{\mp}$
decays are related to the angle
$\beta \equiv \arg[-V_{\rm cd}V^{*}_{\rm cb}/V_{\rm td}V^{*}_{\rm tb}]$.  
%In this Letter, we 
We
present a measurement of the branching fraction and a first measurement of \CP-violating asymmetries in
%neutral 
$B \to D^{*\pm}D^{\mp}$ decays using a sample of $87.9 \pm 1.0$ million \BB decays.
%The data sample corresponds to 81 \invfb
%collected on the \Y4S resonance 
%with the \babar\ detector.
%at the SLAC PEP-II storage ring 
%between October 1999 and July 2002.

As recent measurements of the parameter \stwob using the quark process $b \to c\bar{c}s$ have shown, \CP is
violated in the neutral $B$-meson system~\cite{BabarSin2b,BelleSin2b}.  The measured asymmetries are currently
consistent with the SM 
%expectation, based on measurements and theoretical estimates of elements of the Cabibbo-Kobayashi-Maskawa (CKM) quark-mixing matrix~\cite{CKM}.  
expectation~\cite{CKMWorkshop}.
%However, the
%matter-antimatter asymmetry of the Universe poses great difficulties for reconciliation with the amount of
%\CP violation allowed by the SM~\cite{Sakharov,GHS}.  It is not clear that the physics
%responsible for cosmological matter-antimatter asymmetry is presently accessible. 
%Nevertheless, 
%In order to search for additional sources of \CP violation and other new physics, different quark processes such as $b
%\to c\bar{c}d$ must be examined.
In order to search for additional sources of \CP violation from new physics processes, different quark decays such as 
$b\to c\bar{c}d$ must be examined.

%The matter-antimatter asymmetry of the Universe poses great difficulties for reconciliation with the amount of
%\CP violation allowed by the Standard Model (SM) of electroweak interactions~\cite{Sakharov,GHS}.  In the SM, \CP violation
%arises from a single complex phase in the Cabibbo-Kobayashi-Maskawa (CKM) quark-mixing matrix~\cite{CKM}.  
%As recent measurements of the parameter \stwob using the quark process $b \to c\bar{c}s$ have shown, \CP is 
%violated in the neutral
%$B$-meson system~\cite{BabarSin2b,BelleSin2b}.  These measurements are so far not inconsistent with SM expectation.  Thus, the
%open problem of insufficient \CP violation for matter-antimatter asymmetry of the Universe remains
%unexplained.  In order to search for additional sources of \CP violation, different quark processes such as $b
%\to c\bar{c}d$ must be examined.  However, sufficient statistics to indicate agreement or disagreement with the 
%SM are several years from being obtained; this paper represents an initial
%measurement of \CP asymmetries in neutral $B \to D^{*\pm}D^{\mp}$ with the limited statistics presently available.


%In the SM, the time-dependent \CP-violating asymmetry in the tree-level reactions of both $b \to
%c\bar{c}s$ decays (for example 
%\bpsiks) 
%\Bzb $\to \jpsi \KS$)
%and $b \to c\bar{c}d$ decays (such as 
%\Bztodstdcc, 
%\Bzb $\to D^{*\pm}D^{\mp}$,
%see Figure 1) is related to the angle $\beta$ of the Unitarity Triangle of the CKM matrix.  
%For $b \to c\bar{c}s$ decays,
%the leading-order penguin diagram contribution contains the same CKM phase as the tree; the effect from
%diagrams contributing a different phase is highly suppressed in the SM~\cite{Ciuchini}.  
In $b \to
c\bar{c}d$ processes (for example, 
%neutral 
$B \to D^{*\pm}D^{\mp}$ decays; see Fig.~1), 
penguin contributions containing a different weak phase than the tree
are not expected to be as highly suppressed
as in $b \to c\bar{c}s$ decays; thus the relation of the time-dependent 
\CP-violating asymmetries in $b \to c\bar{c}d$ decays to $\beta$ is less exact than in decays such as \bpsiks.  
However, the contribution from additional weak phases in time-dependent asymmetries in $b \to c\bar{c}d$ due 
to purely SM processes is still expected to be fairly small, of order $\Delta \beta = 0.1$ in a simplified 
model~\cite{GrossWorah,Gronau}.  
A variety of beyond-SM processes, which can provide additional sources of \CP violation, can greatly 
increase this contribution, up to $\Delta \beta \approx 0.6$ in some models~\cite{GrossWorah}.

\vspace*{-0.6cm}
\setlength{\unitlength}{.31cm}
\begin{figure}[h]
\hspace*{-0.7cm}
\begin{minipage}[h]{3.0cm}
\includegraphics{TreeDiag.eps}
\end{minipage}
%\hfill
\hspace*{1.0cm}
\begin{minipage}[h]{3.0cm}
\vspace*{0.5cm}
\includegraphics{PenguinDiag.eps}
\end{minipage}
\vspace*{-0.0cm}
\caption{The leading-order Feynman graphs for \Bztodstdcc decay: 
a) tree diagram and b) penguin diagram.}
\end{figure}
%\vspace*{.1cm}


%Using a data sample of 
%approximately 88 million \BB pairs, we 
%%%We select $B$ decays to
%$D^{*\pm}D^{\mp}$ 
%%%$D^{*+}D^{-}$ and $D^{*-}D^{+}$
%%%via full reconstruction of the decay products.  
%%%The \Dstarp is reconstructed in its decay to $\Dz\pip$, where the \Dz subsequently decays to one of the four modes
%%%$K^{-}\pi^{+}$, $K^{-}\pi^{+}\piz$, $K^{-}\pi^{+}\pi^{-}\pi^{+}$, or $\KS\pi^{+}\pi^{-}$.
%$K\pi$, $K\pi\piz$, $K\pi\pi\pi$, or $\KS\pi\pi$.
%The charged $D$ is reconstructed
%in its decays to $K\pi\pi$ and to $\KS\pi$.
%%%The \Dm is reconstructed
%%%in its decays to $K^{+}\pi^{-}\pi^{-}$ and to $\KS\pi^{-}$.
%%%We then 
%algorithmically 
%%%determine whether 
%%%the other $B$ meson in the event, $B_{\rm tag}$, was a \Bz or \Bzb at the time of decay; this is 
%%%referred to as ``flavor tagging.''  
%The total selected sample contains approximately 120 signal events.

\CP-violating asymmetries in 
%\Bztodstdcc 
%neutral 
$B \to D^{*\pm}D^{\mp}$
are due to interference between the decay amplitudes and the \BzBzb
mixing amplitude, as well as interference between tree and penguin decay amplitudes. 
%The spin quantum number
%of the \Y4S is preserved in \BzBzb pair production, resulting in a $P$-wave correlation between the two 
%neutral $B$ mesons until one of them decays.  
The decay rate distributions $f^{\pm}$, where
the superscript $+(-)$ refers to whether the tagging meson, $B_{\rm tag}$, was \Bz(\Bzb), are given by
\begin{eqnarray}
f^{\pm} & = & \frac{e^{-\left|\deltat\right|/\tau}}{4\tau} \times \nonumber \\
%A^2_{D^{*\pm}D^{\mp}}[1
 & & [1 \pm S \sin(\deltamd\deltat) \mp C \cos(\deltamd\deltat)],
\label{fplusminus}
\end{eqnarray}
where $\tau$ is the mean \Bz lifetime, $\deltamd$ is the $\Bz\Bzb$ mixing frequency,
and $\deltat = t_{\rm reco} - \t_{\rm tag}$ is the time elapsed between the 
%neutral 
$B$ decay to 
$D^{*\pm}D^{\mp}$ and the decay of $B_{\rm tag}$.  Separate $S$ and $C$ parameters
are fitted for the two decays $D^{*-}D^{+}$ and $D^{*+}D^{-}$, resulting in the four fitted \CP-violation parameters
$\{ S_{\scriptscriptstyle -+}, C_{\scriptscriptstyle -+}, S_{\scriptscriptstyle +-}, C_{\scriptscriptstyle +-} \}$.  The 
time-integrated asymmetry $\mathcal{A}$ between the rates to $D^{*-}D^{+}$ and $D^{*+}D^{-}$
is defined as
\begin{equation}
%\mathcal{A} = \frac{A^2_{D^{*+}D^{-}} - A^2_{D^{*-}D^{+}}}{A^2_{D^{*+}D^{-}} + A^2_{D^{*-}D^{+}}}
\mathcal{A} = \frac{N_{D^{*+}D^{-}} - N_{D^{*-}D^{+}}}{N_{D^{*+}D^{-}} + N_{D^{*-}D^{+}}}.
\end{equation}
%Unlike final states such as $\jpsi$\KS or $\pi^{+}\pi^{-}$, 

The states $D^{*-}D^{+}$ and $D^{*+}D^{-}$ are not 
\CP eigenstates.  The formalism of time evolution for non-\CP eigenstate vector-pseudoscalar decays 
%such as 
%%\Bztodstdcc, 
%%neutral 
%$B \to D^{*\pm}D^{\mp}$,
%including definitions 
%of the \CP asymmetry parameters 
%%$S_{D^{*-}D^{+}}$, $C_{D^{*-}D^{+}}$, $S_{D^{*+}D^{-}}$, $C_{D^{*+}D^{-}}$, 
%$S_{D^{*\pm}D^{\mp}}$, $C_{D^{*\pm}D^{\mp}}$,
%and $\mathcal{A}$ in terms of $\beta$ and other fundamental quantities, 
%is more complicated than the formalism for pure \CP eigenstates and 
is given in Ref.~\cite{Aleksan}.  
%If one were to neglect the effects of penguins,
%\begin{equation}
%\sin^{2}2\beta = \frac{1}{2}\left[ 1 + S_{\scriptscriptstyle -+}S_{\scriptscriptstyle +-} \pm 
%\sqrt{(1 - S_{\scriptscriptstyle -+}^2)(1 - S_{\scriptscriptstyle +-}^2)} \right]
%\end{equation}
%where the ``$-$'' solution is strongly favored by~\cite{Aleksan}.
In the case of equal amplitudes for $B \to D^{*-}D^{+}$ and $B \to D^{*+}D^{-}$, one expects that at tree level
$C_{\scriptscriptstyle -+} = C_{\scriptscriptstyle +-} = 0$ and $S_{\scriptscriptstyle -+} =
S_{\scriptscriptstyle +-} = -\stwob$.

%For this measurement, we fully reconstruct neutral $B$ decays to $D^{*+}D^{-}$ and $D^{*-}D^{+}$. 
%The \Dstar is reconstructed in its decay to $\Dz\pi$, where the \Dz subsequently decays to one of the four modes 
%%$K^{+}\pi^{-}$, $K^{+}\pi^{-}\piz$, $K^{+}\pi^{-}\pi^{+}\pi^{-}$, or $\KS\pi^{+}\pi^{-}$.  
%$K\pi$, $K\pi\piz$, $K\pi\pi\pi$, or $\KS\pi\pi$.  
%The charged $D$ is reconstructed 
%in its decays to $K\pi\pi$ and to $\KS\pi$.  We use a data sample consisting of 81 \invfb 
%collected on the \Y4S resonance with the \babar\ detector at the SLAC PEP-II storage ring between October 1999 
%and July 2002.

A detailed description of the \babar\ detector is presented in Ref.~\cite{BABARNIM}.  Charged particle 
momenta are measured in a tracking system consisting of a 5-layer double-sided silicon vertex tracker (SVT) 
and a 40-layer hexagonal-cell wire drift chamber (DCH) filled with a gas mixture of helium and isobutane.  The 
SVT and DCH operate within a 1.5 T solenoidal field.  
%The typical decay vertex resolution for fully 
%reconstructed $B$ decays is approximately 65 $\mu$m along the center-of-mass (CM) boost direction.  
Photons 
are detected and their energies are measured in a CsI(Tl) electromagnetic calorimeter.  Muons 
%and long-lived neutral hadrons 
are identified in 
the instrumented flux return (IFR), composed of resistive plate chambers and layers of iron that 
return the magnetic flux of the solenoid.  A detector of internally reflected Cherenkov light (DIRC) 
is used for particle identification.
%together with d$E$/d$x$ information from the DCH and SVT, provides separation of kaons and pions.

We select hadronic events using 
%charged 
track multiplicity and event topology criteria.  At least three 
reconstructed 
%charged 
tracks, each with transverse momentum greater than 100 MeV/$c$, are required in the 
laboratory polar angle region $0.41 < \theta_{\rm lab} < 2.54$, where $\theta_{\rm lab} = 0$ is the $e^{-}$-beam direction.  
%Each of these tracks must have at least 12 
%DCH hits and originate from within 10 cm in $z$ and 1.5 cm in $r-\phi$ of the center of the beam crossing region.  
The event must have a total measured energy in the laboratory frame greater than 4.5 GeV.  In order 
to help reject non-\BB background, the ratio of Fox-Wolfram moments $H_2/H_0$ is required to be less than 0.5~\cite{fox}.

For reconstruction of 
%\Bztodstdcc, 
%neutral 
$B \to D^{*\pm}D^{\mp}$ decays,
all daughter tracks are required to pass within 10 cm in $z$ and 1.5 cm in 
$r-\phi$ of the center of the beam crossing region.
A track is identified as a charged kaon candidate using the 
Cherenkov angle measured in the DIRC and energy loss information (d$E$/d$x$) from the DCH and SVT.
%All $D$ and \Dstar daughter 
%%charged 
%tracks are required to 
%%have momenta greater than 200 MeV, to have at least 12 DCH hits, and to 
%originate from within 10 cm in $z$ and 1.5 cm in $r-\phi$ of the center of the beam crossing region.  
%%For the charged pion daughter of \Dstarpm, only the track origination requirement is imposed.  

Neutral pion candidates are composed of pairs of photons in the EMC.  The photons must each have energy above 30 MeV, 
and their energy must sum to greater than 200 MeV.
The \piz candidates must have an invariant mass between 115 and 150 MeV/$c^2$.  A mass-constrained fit is 
imposed on \piz candidates, 
in order to improve resolution on the energy of reconstructed $B$ candidates.

We require \KS $\to \pi^{+}\pi^{-}$ candidates to have an invariant mass within 15 MeV/$c^2$ of the nominal \KS
mass~\cite{PDG2002}.  The transverse flight distance of the \KS from the primary event vertex is required to be greater than
2 mm.
%, and the angle between the \KS momentum vector and flight direction must be less than 200 mrad.

To form $D$ candidates, 
kaon candidates are combined with other tracks, assumed to be pions, and \piz candidates in the event.  
We reconstruct \Dz candidates in the four modes
$K^{-}\pi^{+}$, $K^{-}\pi^{+}\piz$, $K^{-}\pi^{+}\pi^{-}\pi^{+}$, and $\KS\pi^{+}\pi^{-}$, and \Dp candidates
in the modes $K^{-}\pi^{+}\pi^{+}$ and $\KS\pi^{+}$.
We require \Dz and \Dp candidates to have reconstructed invariant masses within
20 MeV/$c^2$ of their respective nominal masses, except for \Dz decays with a \piz daughter,
which must be within 35 MeV/$c^2$ of the nominal \Dz mass.  
Mass-constrained fits are applied to \Dz and \Dp candidates in order to improve the measurement of the
momentum of each $D$.  The \Dstarp is then reconstructed in its decay to $\Dz\pip$.

To select neutral $B$ candidates from pairs of well-reconstructed
\Dstarpm and \Dmp candidates, we form a likelihood that includes all measured \Dstar and $D$ masses:
\begin{eqnarray}
\mathcal{L} & = & G(m_{\Dmp},\sigma_{m_{\Dmp}}) \cdot G(m_{\Dz},\sigma_{m_{\Dz}}) \cdot \nonumber \\
            &   &  H(\delta m_{\Dstarpm},\sigma^{\rm core}_{\delta m_{\Dstarpm}},\sigma^{\rm tail}_{\delta m_{\Dstarpm}}, 
                     f_{\rm core}),
\end{eqnarray}
where the \Dstarpm - \Dz mass difference is denoted by $\delta m_{\Dstar}$.
%A caret over a value refers to the nominal value, and 
Each $G$ represents a Gaussian distribution, and $H$ is the sum of two Gaussian distributions, for the core and tail of 
the 
$\delta m_{\Dstarpm}$ distribution, respectively.
%of the form
%\begin{equation}
%\frac{1}{\sqrt{2\pi}\sigma}\exp \left[ -\frac{(m - \hat{m})^2}{2\sigma^2} \right]
%\end{equation}
%in the case of the single Gaussian terms (the double Gaussian contains two such parts).
For $\sigma_{m_D}$ we use
values individually computed for each $D$ candidate, while for $\sigma_{\delta m_{D^{*}}}$
we use values obtained from an inclusive \Dstar data sample: 0.35\mevcc for the core Gaussian distribution and 1.27\mevcc
for the tail, and a core fraction ($f_{\rm core}$) of 51\%.  
Likelihood cuts are set individually for each 
%\Bztodstdcc mode,
combination of \Dstarpm and \Dmp decay modes,
using a detailed Monte Carlo simulation, in order to maximize the expected 
signal sensitivity.
%value of the quantity (signal)$^2$/(signal + background).  
In events with 
more than one \Bz candidate, we choose the candidate with the highest likelihood value.

%A \Bztodstdcc 
A 
%neutral 
$B \to D^{*\pm}D^{\mp}$
candidate is characterized by two kinematic variables:
the beam-energy substituted mass,
$\mes \equiv \sqrt{(\sqrt{s}/2)^{2} - {p_B^*}^2}$,
%\begin{equation}
%\mes \equiv \sqrt{{E_{\rm Beam}^{*2}} - {p_B^*}^2},
%\end{equation}
and the difference of the $B$ candidate's measured energy from the beam energy, 
$\DeltaEStd \equiv E_{B}^* - (\sqrt{s}/2)$.
%\begin{equation}
%\DeltaEStd \equiv E_{B}^* - E_{\rm Beam}^*.
%\end{equation}
$E_{B}^*$ ($p_B^*$) is the energy (momentum) of the \B\ candidate
in the $e^{+}e^{-}$ center-of-mass frame and $\sqrt{s}$ is the
total center-of-mass energy.
The signal region in \DeltaEStd is defined to be $|\DeltaEStd| < 18\mev$. 
According to Monte Carlo simulations,
the width of this region corresponds to approximately 
%$\pm 2\sigma$
twice the signal resolution
in \DeltaEStd.  

The 
%\Bztodstdcc 
%neutral 
$B \to D^{*\pm}D^{\mp}$
decay candidates in the region $5.27 < \mes < 5.30 \gevcc$ and 
$|\DeltaEStd| < 18\mev$ are used to extract \CP-violating asymmetries.
A sideband, defined as $5.20 < \mes < 5.27 \gevcc$ and $|\DeltaEStd| 
< 18\mev$, and a ``large sideband,'' defined as $5.20 < \mes < 5.27 \gevcc$ and 
$|\DeltaEStd| < 200\mev$, are used to extract various background parameters.  The total
numbers of selected events in the signal region, the sideband, and the large sideband 
are 197, 461, and 5187, respectively.

To extract the number of signal events above background, as well as the time-integrated 
\CP asymmetry $\mathcal{A}$ 
(see Eq.~2),
%between the rates to $D^{*+}D^{-}$ and $D^{*-}D^{+}$,
we use an unbinned extended
maximum likelihood fit to the \mes distribution of the $D^{*\pm}D^{\mp}$ candidates, including the sideband.
%neutral $B \to 
%$D^{*\pm}D^{\mp}$ data, including the sidebands of the \mes distribution.  
%
% The \mes distribution for the simultaneous fit to
% $D^{*+}D^{-}$ and $D^{*-}D^{+}$ events is described by an ARGUS threshold function~\cite{Argus}
% with a fixed endpoint given by the average beam energy, a Gaussian to describe a small 
% potential ``peaking'' background contribution underneath the signal peak (from $B$ decays similar to
% $D^{*\pm}D^{\mp}$ signal, for example \Bz $\to D^{*-}D_s^{+}$) which is estimated using both 
% data and Monte Carlo simulations to be $11.6 \pm 7.7$ events, and Gaussians to describe the signals for $D^{*+}D^{-}$ and $D^{*-}D^{+}$.
%
The \mes distribution for the simultaneous fit to
all the selected events is described by Gaussian distributions for the $D^{*+}D^{-}$ and $D^{*-}D^{+}$
signals, an ARGUS threshold function~\cite{Argus}, and a Gaussian distribution to describe a small
potential ``peaking'' background contribution (due to $B$ decays such as \Bz $\to D^{*-}D_s^{+}$ that
are similar to the signal modes).  The endpoint of the ARGUS function is fixed to the average
beam energy.  From studies performed with both data and Monte Carlo simulations, the ``peaking''
contribution is estimated to be $12 \pm 8$ events.
There are a total of four free parameters in the nominal fit: the shape and normalization of the background ARGUS 
function (2), the total 
%neutral 
$B \to D^{*\pm}D^{\mp}$ signal yield (1), and the \CP asymmetry $\mathcal{A}$ (1).
%The fit for $\mathcal{A}$ yields 
%$$\mathcal{A} = -0.03 \pm 0.11{\rm (stat.)} \pm 0.05{\rm (syst.)}$$
The total 
%neutral 
$B \to D^{*\pm}D^{\mp}$ signal yield is determined to be $113 \pm 13$ events. 
%Figure 3 shows the results of the unbinned maximum likelihood fit for $\mathcal{A}$.
Figure 2 shows the \mes distributions for
%\Bztodstmdp and \Bztodstpdm.  
%neutral 
$B \to D^{*-}D^{+}$ and $D^{*+}D^{-}$ candidates.

We use a Monte Carlo simulation of the \babar\ detector to
determine the efficiency for reconstructing the 
%neutral 
$B \to D^{*\pm}D^{\mp}$ signal.  The
efficiencies range from 6\% to 18\%, depending on the $D$ decay   
modes.  From these efficiencies and the total number of recorded \BB pairs, 
and assuming the $\Y4S \to \BzBzb$ branching fraction to be $50\%$, we determine 
the branching fraction for 
neutral $B$ to $D^{*\pm}D^{\mp}$ to be
%$$\mathcal{B}(\Bztodstdcc) = (8.8 \pm 1.0{\rm (stat.)} \pm 1.3{\rm (syst.)}) \times 10^{-4}.$$
$$\mathcal{B}(B \to D^{*\pm}D^{\mp}) = (8.8 \pm 1.0{\rm (stat.)} \pm 1.3{\rm (syst.)}) \times 10^{-4}.$$

%\vspace*{.2cm}
\begin{figure}[!htb]
\begin{center}
\includegraphics[width=8.5cm]{PRLmassplots_2.eps}
\caption{
The \mes distributions of a)
%\Bztodstmdp 
%neutral 
$B \to D^{*-}D^{+}$
and b) $B \to D^{*+}D^{-}$
candidates with $|\DeltaEStd| < 18\,\mev$.
The fit includes Gaussian distributions to model the signal and 
%also 
a small peaking background component, and an ARGUS
function~\cite{Argus} to model the combinatoric background shape.
%The corresponding distribution for 
%%\Bztodstpdm 
%$D^{*+}D^{-}$
%events is given in b). 
%and c) are the corresponding figures when \Bztodstmdp
%and \Bztodstpdm events are separately considered.  Plot d) shows the likelihood distribution
%for the \CP asymmetry parameter $\mathcal{A}$ between the rates to $D^{*+}D^{-}$
%and $D^{*-}D^{+}$.
}
\label{fig:mes}   
\end{center}
\end{figure}

Systematic uncertainties on the branching fraction are dominated by uncertainty on the charged-particle
tracking efficiency ($8.9\%$), uncertainties on the branching fractions of the $D$ decay modes ($7.4\%$)~\cite{PDG2002},
and the uncertainty on the amount of peaking background ($6.8\%$).  The total 
systematic uncertainty from all considered sources is $14.5\%$.  The result is consistent with Ref.~\cite{BelleDstD}.

The fitted value for $\mathcal{A}$ is 
$$\mathcal{A} = -0.03 \pm 0.11{\rm (stat.)} \pm 0.05{\rm (syst.)}.$$

Systematic uncertainties on $\mathcal{A}$ are dominated by potential differences in the reconstruction efficiencies 
of positively and negatively charged tracks (0.04), and by uncertainty in the \mes resolution for
%\Bztodstdcc
%neutral 
$B \to D^{*\pm}D^{\mp}$ signal events (0.03).

The method for extracting time-dependent \CP asymmetries shares many of the techniques that are used for the 
measurement of \stwob in
charmonium decays in \babar~\cite{BabarSin2b}.  We use the same algorithms for determination of the flavor of the 
tagging $B$ in the event, for determining the distance \deltaz between the 
%\Bztodstdcc 
%neutral 
$B \to D^{*\pm}D^{\mp}$
and tagging $B$ decay
vertices, and for performing the maximum likelihood fit.  We also use the same data sample, $B_{\rm flav}$, of
fully reconstructed $B$ decays to $D^{(*)\pm}(\pi^{\mp}, \rho^{\mp}, a_1^{\mp})$ to measure tagging performance and
\deltaz resolution.

The $B$ flavor-tagging algorithm relies on the correlation between the flavor of the $b$ quark and the particle types, momenta,
and charges of the remaining tracks in the event.  A multivariate algorithm is used to separate events into four
tagging categories and to determine tag flavor, the details of which are given in Ref.~\cite{BabarSin2b}.  
%The {\tt Lepton} category contains events with an identified lepton, as well as a
%a supporting kaon tag if present.  Events with either a well-identified kaon, or both a kaon and soft pion with opposite 
%charge and similar flight direction, are assigned to the {\tt Kaon I} category.  Events with only a soft pion or a less 
%clearly-identified kaon are assigned to the {\tt Kaon II} category.  All other events are either assigned to an {\tt 
%Inclusive} category, or excluded from time-dependent \CP asymmetry analysis, based on the estimated mistag probability.  
%The quality of tagging, in terms of a quantity inversely proportional to errors on \CP asymmetry parameters, is expressed 
%as the effective efficiency $Q = \sum_i \epsilon_i (1-2w_i)^2$, where $\epsilon_i$ and $w_i$ are the efficiencies and 
%mistag probabilities, respectively, for events in category $i$.  Table I summarizes the tagging performance measured in a 
%data sample $B_{\rm flav}$ of fully reconstructed $B$ decays to $D^{(*)\pm}(\pi^{\mp}, \rho^{\mp}, a_1^{\mp})$.  The 
%assumption of equivalent tagging behavior for \Bztodstdcc decays as for the $B_{\rm flav}$ sample is validated using 
%detailed Monte Carlo simulation.

The elapsed time \deltat between the 
%\Bztodstdcc 
%neutral 
$B \to D^{*\pm}D^{\mp}$
and tagging $B$ decays is determined from the measured distance \deltaz between the $z$ positions of
the two $B$ decay vertices and from the known boost of the $e^+e^-$ system.  A detailed description of the algorithm is given in 
Ref.~\cite{BabarS2bPRD}.  We accept events with $\sigma_{\deltat} <$ 2.5\hspace{.08cm}ps and 
$|\deltat| <$ 20\hspace{.08cm}ps, where 
$\sigma_{\deltat}$ is the error on \deltat.  We find that 93\% of signal candidates satisfy these requirements.

We determine the time-dependent \CP asymmetry parameters 
%$S_{D^{*-}D^{+}}$, $C_{D^{*-}D^{+}}$, $S_{D^{*+}D^{-}}$, and $C_{D^{*+}D^{-}}$ 
using a simultaneous unbinned maximum likelihood fit to the \deltat distributions of the
$D^{*\pm}D^{\mp}$ and $B_{\rm flav}$ candidates,
including \mes sideband samples for background parametrization.  The \deltat distribution for $D^{*\pm}D^{\mp}$ signal 
events is described by
Eq.~1.  The \deltat distribution of $B_{\rm flav}$ events 
is also described by Eq.~1 with $C=1$ and $S=0$ where the superscript $+(-)$ refers to opposite (same) flavor events, comparing
the reconstructed and tag $B$ mesons.
%is described according to the known frequency for \BzBzb oscillation~\cite{PDG2002}.  
The mistag fraction $w$ reduces the measured 
%\CP asymmetry amplitude 
$S$ and $C$ coefficients
by a factor $1 - 2w$; this fraction is measured 
within the fit for each tagging category, utilizing the large $B_{\rm flav}$ sample.  We convolve the \deltat
distribution with a resolution function modelled by the sum of three Gaussian distributions.  The \deltat resolution is 
dominated by the
tag vertex $z$-position resolution and is parametrized 
%in a similar manner as is done 
in the same way as
for the charmonium \stwob measurement; this is described in detail in Ref.~\cite{BabarS2bPRD}.  Both
continuum and \BB backgrounds are incorporated, each with a \deltat distribution that is determined
within the fit, using the \mes sideband.

There are 37 fitted parameters in the combined fit for time-dependent \CP asymmetries: the \CP asymmetry parameters 
$S_{\scriptscriptstyle -+}$, $C_{\scriptscriptstyle -+}$, $S_{\scriptscriptstyle +-}$, and $C_{\scriptscriptstyle +-}$ (4); 
the average mistag fractions $w_i$ (4), and the differences 
$\Delta w_i$ between \Bz and \Bzb mistag fractions (4), where $i$ is one of the four tagging categories; parameters for 
the signal \deltat resolution 
function (8); and parameters for background time dependence (6), \deltat resolution (3), and mistag fractions (8).  
The $B_{\rm flav}$ sample constrains all parameters except the \CP asymmetries.  In the nominal fit, we fix 
$\tau_{\Bz} =$ 1.542\hspace{.08cm}ps and $\Delta m_d =$ 0.489\hspace{.08cm}ps$^{-1}$~\cite{PDG2002}.  

The time-dependent \CP asymmetry fit to the 
%\Bztodstdcc 
%neutral 
$B \to D^{*\pm}D^{\mp}$
and $B_{\rm flav}$ samples yields
\begin{eqnarray}
S_{\scriptscriptstyle -+} & = &  -0.24 \pm 0.69{\rm (stat.)} \pm 0.12{\rm (syst.)}, \nonumber\\
C_{\scriptscriptstyle -+} & = &  -0.22 \pm 0.37{\rm (stat.)} \pm 0.10{\rm (syst.)}, \nonumber\\
S_{\scriptscriptstyle +-} & = &  -0.82 \pm 0.75{\rm (stat.)} \pm 0.14{\rm (syst.)}, \nonumber\\
C_{\scriptscriptstyle +-} & = &  -0.47 \pm 0.40{\rm (stat.)} \pm 0.12{\rm (syst.)}. \nonumber
\end{eqnarray}
The correlation between $S_{\scriptscriptstyle -+}$ and $C_{\scriptscriptstyle -+}$ is $0.16$ and between $S_{\scriptscriptstyle +-}$ and 
$C_{\scriptscriptstyle +-}$ is $-0.01$.  Besides these correlations, the magnitudes of all correlations of the $S$ and $C$ parameters with any 
%linear combination of the other free parameters are all less than 0.05.  
other free parameter are each less than 0.04.
Figure 3 shows the \deltat distributions and asymmetries in yields between \Bz and \Bzb tags
%, as functions of \deltat, 
for the $D^{*-}D^{+}$ and $D^{*+}D^{-}$ samples,
% respectively, 
each overlaid with a projection of the fit result.

\begin{figure}[!htb]
\begin{center}
\includegraphics[width=7.5cm]{figure3.eps}
\caption{
Distributions of \deltat for 
%\Bztodstpdm 
%neutral 
$B \to D^{*+}D^{-}$
candidates in the signal region with a) a \Bz tag ($N_{\Bz}$) and b) with a \Bzb tag
($N_{\Bzb}$), and c) the raw asymmetry $(N_{\Bz} - N_{\Bzb})/(N_{\Bz} + N_{\Bzb})$.  The
solid curves are the fit projections in \deltat.  The shaded regions represent the
background contributions.  Figures d), e), and f) contain the corresponding information for 
%\Bztodstmdp.
$D^{*-}D^{+}$.
}
\label{fig:dtasym}
\end{center}
\end{figure}


Systematic uncertainties on the time-dependent \CP asymmetry parameters are dominated by uncertainties in the amount,
composition, and \CP asymmetry of the background in the selected $D^{*\pm}D^{\mp}$ events (resulting in errors on the 
parameters ranging from 0.07-0.10); the parametrization of the
\deltat resolution function (0.01-0.06); possible differences between the $B_{\rm flav}$ and $D^{*\pm}D^{\mp}$ mistag fractions (0.01-0.04);
the error on a small correction to the fitted asymmetries due to 
%non-Gaussian behavior caused by 
the limited size
of the $D^{*\pm}D^{\mp}$ sample (0.01-0.02); and the potential presence of a small amount of \CP-violating interference between leading 
order and 
doubly-CKM-suppressed decay channels of the tagging $B$ meson (0.01-0.03).  
%The total systematic errors on the time-dependent \CP asymmetry parameters are given above.  

In summary, we have measured 
%the branching fraction of and time-dependent and time-integrated \CP asymmetries in 
the branching fraction and \CP-violating asymmetries for
%neutral $B$ to $D^{*\pm}D^{\mp}$ 
$B \to D^{*\pm}D^{\mp}$
decays.  The small size of the $D^{*\pm}D^{\mp}$ sample currently precludes the observation of \CP violation 
in this first measurement in this 
channel; however, with the addition of more data, future results may  
%reduction in both statistical and systematic uncertainties, and thus 
%allow sensitive tests for new \CP-violating physics.
provide important information about sources of \CP-violation in the $B$-meson system.
%j future measurements may take advantage of larger datasets which allow reduction in both statistical and systematic uncertainties.
%Small $D^{*\pm}D^{\mp}$ sample statistics currently preclude the observation of \CP violation in this channel.
%Both statistical and systematic uncertainties will decrease in future measurements when 
%increased statistics to this channel are obtained.



% Input the pubboard acknowledgements file
We are grateful for the excellent luminosity and machine conditions
provided by our \pep2\ colleagues, 
and for the substantial dedicated effort from
the computing organizations that support \babar.
The collaborating institutions wish to thank 
SLAC for its support and kind hospitality. 
This work is supported by
DOE
and NSF (USA),
NSERC (Canada),
IHEP (China),
CEA and
CNRS-IN2P3
(France),
BMBF and DFG
(Germany),
INFN (Italy),
FOM (The Netherlands),
NFR (Norway),
MIST (Russia), and
PPARC (United Kingdom). 
Individuals have received support from the 
A.~P.~Sloan Foundation, 
Research Corporation,
and Alexander von Humboldt Foundation.

   
\begin{thebibliography}{99}

\bibitem{CKM}
N.~Cabibbo, \prl{\bf 10}, 531 (1963); M.~Kobayashi and T.~Maskawa, \progtp{49}, 652 (1973).

%\bibitem{UnitarityTriangle}
%A.B.~Carter and A.I.~Sanda, \pr{\bf D 23}, 1567 (1981);
%I.I.~Bigi and A.I.~Sanda, \np{\bf B 193}, 85 (1981).

\bibitem{BabarSin2b}
%\babar\ Collaboration, B.~Aubert {\em et al.}, \prl{\bf 87}, 091801 (2001).
\babar\ Collaboration, B.~Aubert {\em et al.}, \prl{\bf 89}, 201802 (2002).

\bibitem{BelleSin2b}
%BELLE Collaboration, K.~Abe {\em et al.}, \prl{\bf 87}, 091802 (2001).
BELLE Collaboration, K.~Abe {\em et al.}, \pr{\bf D 66}, 071102 (2002).

\bibitem{CKMWorkshop}
%See ``Workshop on the CKM Unitarity Triangle'' http://www.cern.ch/ckm-workshop (Geneva, 2002).
See, \textit{e.g.}, F.~Gilman, K.~Kleinknecht, and B.~Renk, \pr{\bf D 66}, 010001 (2002), and 
references therein.

%\bibitem{Sakharov}
%A.D.~Sakharov, \zpr{5}, 32 (1967); \jl{5}, 24 (1967).

%\bibitem{GHS}
%M.B.~Gavela {\em et al.}, \mpl{A9}, 795 (1994);
%P.~Huet and E.~Sather, \prd{51}, 379 (1995). 

%\bibitem{CKM}
%N.~Cabibbo, \prl {\bf 10}, 531 (1963);
%M.~Kobayashi and T.~Maskawa, \progtp {\bf 49}, 652 (1973).

%\bibitem{Ciuchini}
%M.~Ciuchini {\em et al.}, \npb{501}, 3 (1998).

\bibitem{GrossWorah}
Y.~Grossman and M.~Worah, \pl{\bf B 395}, 241 (1997).

\bibitem{Gronau}
%M.~Gronau, \pl{\bf B 300}, 163 (1993).
M.~Gronau, \prl{\bf 63}, 1451 (1989).

\bibitem{Aleksan}
M.~Gronau, \pl{\bf B 233}, 479 (1989);
R.~Aleksan {\em et al.}, \np{\bf B 361}, 141 (1991);
R.~Aleksan {\em et al.}, \pl{\bf B 317}, 173 (1993).

\bibitem{BABARNIM}
\babar\ Collaboration, B.\ Aubert {\em et al.}, \nim{A 479}, 1 (2002).

%\bibitem{Gardner}
%S.~Gardner, hep-ph/0203152.

\bibitem{fox}
G.C.~Fox and S.~Wolfram, \prl{\bf 41}, 1581 (1978).

\bibitem{PDG2002}
Particle Data Group, K.~Hagiwara {\em et al.}, \pr{\bf D 66}, 010001 (2002).

\bibitem{Argus}
ARGUS Collaboration, H.~Albrecht {\em et al.}, \zp{\bf C 48}, 543 (1990).

\bibitem{BelleDstD}
%J.~Albert, Measurement of \CP Violation in $b
%\rightarrow c\bar{c}d$ Exclusive Decays at the \babar\ Experiment, Ph.D. Thesis, Princeton Univ.~(2002);
BELLE Collaboration, K.~Abe {\em et al.}, \prl{\bf 89}, 122001 (2002);
CLEO Collaboration, D.M.~Asner {\em et al.}, \prl{\bf 79}, 799 (1997).

\bibitem{BabarS2bPRD}
%\babar\ Collaboration, B.~Aubert {\em et al.}, SLAC-PUB-9060, hep-ex/0201020, to appear in Phys.~Rev.~D.
\babar\ Collaboration, B.~Aubert {\em et al.}, \pr{\bf D 66} 032003 (2002).


\end{thebibliography}

\end{document}%%%


hep-ex0303004.extracted_bib
\begin{thebibliography}{99}

\bibitem{CKM}
N.~Cabibbo, \prl{\bf 10}, 531 (1963); M.~Kobayashi and T.~Maskawa, \progtp{49}, 652 (1973).

%\bibitem{UnitarityTriangle}
%A.B.~Carter and A.I.~Sanda, \pr{\bf D 23}, 1567 (1981);
%I.I.~Bigi and A.I.~Sanda, \np{\bf B 193}, 85 (1981).

\bibitem{BabarSin2b}
%\babar\ Collaboration, B.~Aubert {\em et al.}, \prl{\bf 87}, 091801 (2001).
\babar\ Collaboration, B.~Aubert {\em et al.}, \prl{\bf 89}, 201802 (2002).

\bibitem{BelleSin2b}
%BELLE Collaboration, K.~Abe {\em et al.}, \prl{\bf 87}, 091802 (2001).
BELLE Collaboration, K.~Abe {\em et al.}, \pr{\bf D 66}, 071102 (2002).

\bibitem{CKMWorkshop}
%See ``Workshop on the CKM Unitarity Triangle'' http://www.cern.ch/ckm-workshop (Geneva, 2002).
See, \textit{e.g.}, F.~Gilman, K.~Kleinknecht, and B.~Renk, \pr{\bf D 66}, 010001 (2002), and 
references therein.

%\bibitem{Sakharov}
%A.D.~Sakharov, \zpr{5}, 32 (1967); \jl{5}, 24 (1967).

%\bibitem{GHS}
%M.B.~Gavela {\em et al.}, \mpl{A9}, 795 (1994);
%P.~Huet and E.~Sather, \prd{51}, 379 (1995). 

%\bibitem{CKM}
%N.~Cabibbo, \prl {\bf 10}, 531 (1963);
%M.~Kobayashi and T.~Maskawa, \progtp {\bf 49}, 652 (1973).

%\bibitem{Ciuchini}
%M.~Ciuchini {\em et al.}, \npb{501}, 3 (1998).

\bibitem{GrossWorah}
Y.~Grossman and M.~Worah, \pl{\bf B 395}, 241 (1997).

\bibitem{Gronau}
%M.~Gronau, \pl{\bf B 300}, 163 (1993).
M.~Gronau, \prl{\bf 63}, 1451 (1989).

\bibitem{Aleksan}
M.~Gronau, \pl{\bf B 233}, 479 (1989);
R.~Aleksan {\em et al.}, \np{\bf B 361}, 141 (1991);
R.~Aleksan {\em et al.}, \pl{\bf B 317}, 173 (1993).

\bibitem{BABARNIM}
\babar\ Collaboration, B.\ Aubert {\em et al.}, \nim{A 479}, 1 (2002).

%\bibitem{Gardner}
%S.~Gardner, hep-ph/0203152.

\bibitem{fox}
G.C.~Fox and S.~Wolfram, \prl{\bf 41}, 1581 (1978).

\bibitem{PDG2002}
Particle Data Group, K.~Hagiwara {\em et al.}, \pr{\bf D 66}, 010001 (2002).

\bibitem{Argus}
ARGUS Collaboration, H.~Albrecht {\em et al.}, \zp{\bf C 48}, 543 (1990).

\bibitem{BelleDstD}
%J.~Albert, Measurement of \CP Violation in $b
%\rightarrow c\bar{c}d$ Exclusive Decays at the \babar\ Experiment, Ph.D. Thesis, Princeton Univ.~(2002);
BELLE Collaboration, K.~Abe {\em et al.}, \prl{\bf 89}, 122001 (2002);
CLEO Collaboration, D.M.~Asner {\em et al.}, \prl{\bf 79}, 799 (1997).

\bibitem{BabarS2bPRD}
%\babar\ Collaboration, B.~Aubert {\em et al.}, SLAC-PUB-9060, hep-ex/0201020, to appear in Phys.~Rev.~D.
\babar\ Collaboration, B.~Aubert {\em et al.}, \pr{\bf D 66} 032003 (2002).


\end{thebibliography}