Notes/WZCSA07/noteWZ.tex

\documentclass{cmspaper}

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\usepackage{epstopdf}

\renewcommand{\dj}{d\kern-0.4em\char"16\kern-0.1em}
\renewcommand{\DJ}{\raise0.3ex\hbox{-}\kern-0.36em D}


\RequirePackage{xspace}
\input noteWZsymbols

\begin{document}

%==============================================================================
% 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 350 \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
%\newpage
\input zjetbackground
\input Sys

\input results
\input conclusion

\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}

\newpage
\input wzmatcheff

\newpage
\input AppendixBkgEst

\newpage
\input AppendixFitTest


\end{document}
Revision:	1.18
Committed:	Fri Jul 25 18:56:31 2008 UTC (16 years, 9 months ago) by beaucero
Content type:	application/x-tex
Branch:	MAIN
Changes since 1.17:	+3 -0 lines
Log Message:	Steph Appendix
#	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	senka	1.7
19			\renewcommand{\dj}{d\kern-0.4em\char"16\kern-0.1em}
20			\renewcommand{\DJ}{\raise0.3ex\hbox{-}\kern-0.36em D}
21
22	ymaravin	1.5
23	vuko	1.1	\RequirePackage{xspace}
24	vuko	1.2	\input noteWZsymbols
25	vuko	1.1
26			\begin{document}
27
28			%==============================================================================
29			% title page for few authors
30
31			\begin{titlepage}
32
33	vuko	1.11	\analysisnote{2008/051}
34	beaucero	1.12	\date{\today}
35	vuko	1.1
36			\title{Study of the process\\
37	ymaravin	1.5	$ \proton\proton\to \W\Z \to \ell^{\pm}\nu \ellell (\ell=e,\mu)$\\
38	vuko	1.1	at CMS}
39
40			\begin{Authlist}
41	senka	1.7	V.~Brigljevi\'c, S.~Morovi\'c, S.~ \DJ uri\'c
42			\Instfoot{IRB}{Ru\dj er Bo\v skovi\'c Institute, 10002 Zagreb, Croatia}
43	vuko	1.1	S.~Beauceron
44			\Instfoot{CERN}{CERN, Geneva, Switzerland}
45			K.~Kaadze, Y.~Maravin
46			\Instfoot{KSU}{Kansas State University, Manhattan, Kansas, USA}
47			\end{Authlist}
48
49			\begin{abstract}
50
51			In this note, we investigate the discovery potential
52	ymaravin	1.5	for the $\proton\proton \to \W\Z \to \ell^{\pm}\nu\ellell (\ell=e,\mu)$ process at CMS,
53			using full detector simulation of the signal and of the various physics and
54	ymaravin	1.13	instrumental backgrounds. We propose data driven methods to extract backgrounds
55			and estimate that we can reach 5$\sigma$ significance of \WZ signal at CMS with
56	ymaravin	1.14	less than 350 \invpb at 95 \% C.L..
57	ymaravin	1.5
58	beaucero	1.3	% We determine the signal significance as a function of
59			% integrated luminosity at the LHC based on Standard Model
60			% cross sections computed at the next to leading order in $\alpha_s$.
61	ymaravin	1.5	% We expect $\sim 97 $ signal $\W\Z \to \ell^{\pm}\nu \ellell (\ell=e,\mu)$ events
62			% and $\sim 22$ background events per inverse femtobarn. The background is found
63			% to be dominated by the $\Zbbbar$, $\t\tbar$, and \ZZ processes.
64			% The sensitivity of the method allows for a potential 5-sigma discovery
65			% of the $\proton\proton \to\W\Z$ process with about 150 inverse picobarn.
66	vuko	1.1	\end{abstract}
67
68			\end{titlepage}
69
70			\setcounter{page}{2}%JPP
71
72			%==============================================================================
73
74			\tableofcontents
75
76			\setcounter{footnote}{0}
77
78			\newpage
79			\input introduction
80			\input samples
81			\input selection
82	beaucero	1.17	%\newpage
83	ymaravin	1.10	\input zjetbackground
84			\input Sys
85
86	vuko	1.1	\input results
87			\input conclusion
88
89			\bibliographystyle{physrev4wt}
90			\bibliography{noteWZ}
91
92	beaucero	1.12
93			\begin{thebibliography}{99}
94			\bibitem{Haywood:1999qg} S.Haywood {\it et al.} ``Electroweak physics'', hep-ph/0003275
95			\bibitem{Sjostrand:2003wg} T. Sjostrand, L. Lonnblad, S. Mrenna and P. Skands, ``PYHTIA 6.3: Physics and manual'', hep-ph/0308153
96			\bibitem{Campbell:2005} J. M. Campbell and R. K. Ellis, ``MCFM v4.1. A Monte Carlo for FeMtobarn processes at hadron colliders''
97			\bibitem{Frixione:2002ik} S. Frixione and B. R. Webber, ``Matching NLO QCD computations and parton shower simulations'', JHEP 06.029 (2002), [hep-ph/0204244]
98			\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
99			\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
100			\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
101			\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
102			\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
103
104
105			%\bibitem{PTDR1} CMS Collaboration, Physics Technical Design Report, Vol.1 - Detector Performance and Software, CERN/LHCC 2006-001 (February 2006).
106			\end{thebibliography}
107
108	beaucero	1.17	\newpage
109			\input wzmatcheff
110
111			\newpage
112			\input AppendixBkgEst
113
114	beaucero	1.18	\newpage
115			\input AppendixFitTest
116
117	beaucero	1.17
118	vuko	1.1	\end{document}