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\documentclass{cmspaper}
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% $Id:
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\usepackage{graphicx}
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\usepackage{amssymb}
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\renewcommand{\DJ}{\raise0.3ex\hbox{-}\kern-0.36em D}
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\RequirePackage{xspace}
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\input noteWZsymbols
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\begin{document}
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%==============================================================================
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% title page for few authors
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\begin{titlepage}
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\analysisnote{2008/051}
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\date{\today}
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\title{Study of the process\\
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$ \proton\proton\to \W\Z \to \ell^{\pm}\nu \ellell (\ell=e,\mu)$\\
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at CMS}
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\begin{Authlist}
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V.~Brigljevi\'c, S.~Morovi\'c, S.~ \DJ uri\'c
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\Instfoot{IRB}{Ru\dj er Bo\v skovi\'c Institute, 10002 Zagreb, Croatia}
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S.~Beauceron
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\Instfoot{CERN}{CERN, Geneva, Switzerland}
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K.~Kaadze, Y.~Maravin
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\Instfoot{KSU}{Kansas State University, Manhattan, Kansas, USA}
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\end{Authlist}
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\begin{abstract}
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In this note, we investigate the discovery potential
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for the $\proton\proton \to \W\Z \to \ell^{\pm}\nu\ellell (\ell=e,\mu)$ process at CMS,
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using full detector simulation of the signal and of the various physics and
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instrumental backgrounds. We propose data driven methods to extract backgrounds
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and estimate that we can reach 5$\sigma$ significance of \WZ signal at CMS with
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less than 350 \invpb at 95 \% CL.
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% We determine the signal significance as a function of
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% integrated luminosity at the LHC based on Standard Model
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% cross sections computed at the next to leading order in $\alpha_s$.
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% We expect $\sim 97 $ signal $\W\Z \to \ell^{\pm}\nu \ellell (\ell=e,\mu)$ events
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% and $\sim 22$ background events per inverse femtobarn. The background is found
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% to be dominated by the $\Zbbbar$, $\t\tbar$, and \ZZ processes.
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% The sensitivity of the method allows for a potential 5-sigma discovery
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% of the $\proton\proton \to\W\Z$ process with about 150 inverse picobarn.
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\end{abstract}
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\end{titlepage}
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\setcounter{page}{2}%JPP
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%==============================================================================
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\tableofcontents
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\setcounter{footnote}{0}
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\newpage
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\input introduction
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\input samples
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\input selection
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%\newpage
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\input zjetbackground
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\input Sys
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\input results
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\input conclusion
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\clearpage
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\bibliographystyle{physrev4wt}
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\bibliography{noteWZ}
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\begin{thebibliography}{99}
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\bibitem{Haywood:1999qg} S.Haywood {\it et al.} ``Electroweak physics'', hep-ph/0003275
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\bibitem{Sjostrand:2003wg} T. Sjostrand, L. Lonnblad, S. Mrenna and P. Skands, ``PYHTIA 6.3: Physics and manual'', hep-ph/0308153
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\bibitem{Campbell:2005} J. M. Campbell and R. K. Ellis, ``MCFM v4.1. A Monte Carlo for FeMtobarn processes at hadron colliders''
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\bibitem{Frixione:2002ik} S. Frixione and B. R. Webber, ``Matching NLO QCD computations and parton shower simulations'', JHEP 06.029 (2002), [hep-ph/0204244]
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\bibitem{noteElectronID} S.~Beauceron, K.~Kaadze, Y.~Maravin, V.~Brigljevic, S.~Morovic, ``Study of electron identification in $\W^{\pm} Z\to \ell^+\ell^- \ell^\pm \nu$ events'', CMS~AN-2008/047
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\bibitem{Zmumu} N.~Adam {\it and al}, ``Towards a measurement of the inclusive $W\rightarrow\mu\nu$ and $Z\rightarrow\mu^{+}\mu^{-}$ cross sections in pp collisions at $\sqrt{s} = 14$ TeV'', CMS~AN-2007/031
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\bibitem{Zee}N.~Adam {\it and al}, ``Towards a Measurement of the Inclusive $W\rightarrow e\nu$ and $Z\rightarrow ee$ Cross Section in pp Collisions at sqrt(s) = 14 TeV'', CMS~AN-2007/026
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\bibitem{TP}G.~Daskalakis, D.~Evans, C.S.~Hill, J.~Jackson, P.~Vanlaer, J.~Berryhill, J.~Haupt, D.~Futyan, C.~Seez, C.~Timlin, D.~Wardrope, ``Measuring Electron Efficiencies at CMS with Early Data'', CMS~AN-2007/019
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\bibitem{OldNote}V.~Brigljevic, D.~Ferencek, S.~Morovic, M.~Planinic, A.~Oh ``Study of the process $pp\rightarrow WZ \rightarrow 3l$ at CMS'', CMS~AN-2006/063
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\bibitem{BLUE} L. Lyons, D. Gibaut, P.Clifford ``How to Combine Correlated Estimates of a Single Physical Quantity'', Nucl.Instrum.Meth.A270:110,1988.
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%\bibitem{PTDR1} CMS Collaboration, Physics Technical Design Report, Vol.1 - Detector Performance and Software, CERN/LHCC 2006-001 (February 2006).
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\end{thebibliography}
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\newpage
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\appendix
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\input wzmatcheff
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\clearpage
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\input BackgroundEstimationDetails
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\clearpage
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\input AppendixBkgEst
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\input AppendixPseudoExp
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\input xsection
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\input AppendixABCD
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\end{document}
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