Notes/WZCSA07/noteWZ.tex

\documentclass{cmspaper}

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\renewcommand{\dj}{d\kern-0.4em\char"16\kern-0.1em}
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\RequirePackage{xspace}
\input noteWZsymbols

\begin{document}

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% title page for few authors

\begin{titlepage}

  \analysisnote{2008/051}
   \date{\today}

  \title{Study of the process\\
    $ \proton\proton\to \W\Z \to  \ell^{\pm}\nu \ellell (\ell=e,\mu)$\\
     at CMS}

  \begin{Authlist}
    V.~Brigljevi\'c, S.~Morovi\'c, S.~ \DJ uri\'c
       \Instfoot{IRB}{Ru\dj er Bo\v skovi\'c Institute, 10002 Zagreb, Croatia}
       S.~Beauceron
       \Instfoot{CERN}{CERN, Geneva, Switzerland}
       K.~Kaadze, Y.~Maravin
       \Instfoot{KSU}{Kansas State University, Manhattan, Kansas, USA}
  \end{Authlist}

  \begin{abstract}

    In this note, we investigate the discovery potential
    for the $\proton\proton \to \W\Z \to \ell^{\pm}\nu\ellell (\ell=e,\mu)$ process at CMS,
    using full detector simulation of the signal and of the various physics and
    instrumental backgrounds. We propose data driven methods to extract backgrounds
    and estimate that we can reach 5$\sigma$ significance of \WZ signal at CMS with
    less than 300 \invpb at 95 \% C.L..
    
%    We determine the signal significance as a function of
%    integrated luminosity at the LHC based on Standard Model
%    cross sections computed at the next to leading order in $\alpha_s$.  
%    We expect $\sim 97 $ signal $\W\Z \to \ell^{\pm}\nu \ellell (\ell=e,\mu)$ events 
%    and $\sim 22$ background events per inverse femtobarn. The background is found
%    to be dominated by the $\Zbbbar$,  $\t\tbar$, and \ZZ processes.
%    The sensitivity of the method allows for a potential 5-sigma discovery
%    of the $\proton\proton \to\W\Z$ process with about 150 inverse picobarn.
  \end{abstract}

\end{titlepage}

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\tableofcontents

\setcounter{footnote}{0}

\newpage
\input introduction
\input samples
\input selection
\input zjetbackground
\input Sys

\input results
\input conclusion
%\input trial

%\newpage
\bibliographystyle{physrev4wt}
\bibliography{noteWZ}


\begin{thebibliography}{99}
\bibitem{Haywood:1999qg} S.Haywood {\it et al.} ``Electroweak physics'', hep-ph/0003275
\bibitem{Sjostrand:2003wg} T. Sjostrand, L. Lonnblad, S. Mrenna and P. Skands, ``PYHTIA 6.3: Physics and manual'', hep-ph/0308153
\bibitem{Campbell:2005} J. M. Campbell and R. K. Ellis, ``MCFM v4.1. A Monte Carlo for FeMtobarn processes at hadron colliders''
\bibitem{Frixione:2002ik} S. Frixione and B. R. Webber, ``Matching NLO QCD computations and parton shower simulations'', JHEP 06.029 (2002), [hep-ph/0204244]
\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
\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
\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
\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
\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


%\bibitem{PTDR1} CMS Collaboration, Physics Technical Design Report, Vol.1 - Detector Performance and Software, CERN/LHCC 2006-001 (February 2006).
\end{thebibliography}

\end{document}
Revision:	1.13
Committed:	Wed Jul 16 08:17:40 2008 UTC (16 years, 9 months ago) by ymaravin
Content type:	application/x-tex
Branch:	MAIN
Changes since 1.12:	+3 -1 lines
Log Message:	Canges per Steph's request
#	User	Rev	Content
1	vuko	1.1	\documentclass{cmspaper}
2
3			%
4			% $Id:
5			%
6
7			\usepackage{graphicx}
8			\usepackage[intlimits]{amsmath}
9			\usepackage{amsfonts}
10			\usepackage{amssymb}
11			\usepackage{fancyhdr}
12			\usepackage{epsfig}
13			\usepackage{rotating}
14			\usepackage{lscape}
15			\usepackage{graphicx}
16			\usepackage{pst-node}
17	ymaravin	1.5	\usepackage{epstopdf}
18	vuko	1.8	%\usepackage[croatian]{babel}
19	senka	1.7
20			\renewcommand{\dj}{d\kern-0.4em\char"16\kern-0.1em}
21			\renewcommand{\DJ}{\raise0.3ex\hbox{-}\kern-0.36em D}
22
23	ymaravin	1.5
24	vuko	1.1	\RequirePackage{xspace}
25	vuko	1.2	\input noteWZsymbols
26	vuko	1.1
27			\begin{document}
28
29			%==============================================================================
30			% title page for few authors
31
32			\begin{titlepage}
33
34	vuko	1.11	\analysisnote{2008/051}
35	beaucero	1.12	\date{\today}
36	vuko	1.1
37			\title{Study of the process\\
38	ymaravin	1.5	$ \proton\proton\to \W\Z \to \ell^{\pm}\nu \ellell (\ell=e,\mu)$\\
39	vuko	1.1	at CMS}
40
41			\begin{Authlist}
42	senka	1.7	V.~Brigljevi\'c, S.~Morovi\'c, S.~ \DJ uri\'c
43			\Instfoot{IRB}{Ru\dj er Bo\v skovi\'c Institute, 10002 Zagreb, Croatia}
44	vuko	1.1	S.~Beauceron
45			\Instfoot{CERN}{CERN, Geneva, Switzerland}
46			K.~Kaadze, Y.~Maravin
47			\Instfoot{KSU}{Kansas State University, Manhattan, Kansas, USA}
48			\end{Authlist}
49
50			\begin{abstract}
51
52			In this note, we investigate the discovery potential
53	ymaravin	1.5	for the $\proton\proton \to \W\Z \to \ell^{\pm}\nu\ellell (\ell=e,\mu)$ process at CMS,
54			using full detector simulation of the signal and of the various physics and
55	ymaravin	1.13	instrumental backgrounds. We propose data driven methods to extract backgrounds
56			and estimate that we can reach 5$\sigma$ significance of \WZ signal at CMS with
57			less than 300 \invpb at 95 \% C.L..
58	ymaravin	1.5
59	beaucero	1.3	% We determine the signal significance as a function of
60			% integrated luminosity at the LHC based on Standard Model
61			% cross sections computed at the next to leading order in $\alpha_s$.
62	ymaravin	1.5	% We expect $\sim 97 $ signal $\W\Z \to \ell^{\pm}\nu \ellell (\ell=e,\mu)$ events
63			% and $\sim 22$ background events per inverse femtobarn. The background is found
64			% to be dominated by the $\Zbbbar$, $\t\tbar$, and \ZZ processes.
65			% The sensitivity of the method allows for a potential 5-sigma discovery
66			% of the $\proton\proton \to\W\Z$ process with about 150 inverse picobarn.
67	vuko	1.1	\end{abstract}
68
69			\end{titlepage}
70
71			\setcounter{page}{2}%JPP
72
73			%==============================================================================
74
75			\tableofcontents
76
77			\setcounter{footnote}{0}
78
79			\newpage
80			\input introduction
81			\input samples
82			\input selection
83	ymaravin	1.10	\input zjetbackground
84			\input Sys
85
86	vuko	1.1	\input results
87			\input conclusion
88	vuko	1.9	%\input trial
89	vuko	1.1
90			%\newpage
91			\bibliographystyle{physrev4wt}
92			\bibliography{noteWZ}
93
94	beaucero	1.12
95			\begin{thebibliography}{99}
96			\bibitem{Haywood:1999qg} S.Haywood {\it et al.} ``Electroweak physics'', hep-ph/0003275
97			\bibitem{Sjostrand:2003wg} T. Sjostrand, L. Lonnblad, S. Mrenna and P. Skands, ``PYHTIA 6.3: Physics and manual'', hep-ph/0308153
98			\bibitem{Campbell:2005} J. M. Campbell and R. K. Ellis, ``MCFM v4.1. A Monte Carlo for FeMtobarn processes at hadron colliders''
99			\bibitem{Frixione:2002ik} S. Frixione and B. R. Webber, ``Matching NLO QCD computations and parton shower simulations'', JHEP 06.029 (2002), [hep-ph/0204244]
100			\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
101			\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
102			\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
103			\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
104			\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
105
106
107			%\bibitem{PTDR1} CMS Collaboration, Physics Technical Design Report, Vol.1 - Detector Performance and Software, CERN/LHCC 2006-001 (February 2006).
108			\end{thebibliography}
109
110	vuko	1.1	\end{document}