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\usepackage{graphicx}
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\usepackage{listings}
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\usepackage{fancyvrb}
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% \usepackage{amsmath}
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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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% select one of the following and type in the proper number:
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\cmsnote{2010/xyz}
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% \internalnote{2010/005}
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% \conferencereport{2005/000}
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\date{16 April 2010}
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\title{First Observation Study of the Decay
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\boldmath{$B_s\rightarrow J/ \psi \phi$}
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in pp Collisions at \boldmath{$\sqrt{s} =$} 7~TeV}
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\begin{Authlist}
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V.~Azzolini
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\Instfoot{hel}{University of Helsinki, Finland}
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G.~Cerizza\footnote{Contact: gcerizza@utk.edu}, S.~Spanier
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\Instfoot{utk}{University of Tennessee, Knoxville, USA}
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B.~Millan Mejias, A.~Schmidt\footnote{Contact: alex.schmidt@cern.ch}
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\Instfoot{zur}{University of Zurich, Switzerland}
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\end{Authlist}
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\begin{abstract}
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We present the analysis of the the decay $B_s\rightarrow J/ \psi \phi$,
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with $J/ \psi$ decaying into $\mu^+ \mu^-$ and $\phi$ into $K^+ K^-$.
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The present note establishes the trigger and reconstruction efficiencies
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for two selection strategies, one ``cut-and-count'' signal search and a full
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maximum likelihood fit with relaxed selection criteria. The final state is
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reconstructed from a data set of LHC proton-proton collisions
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at a center-of-mass energy of 7~TeV. The studies presented in this version are
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purely based on simulated events.
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For an integrated luminosity below 1~pb$^{-1}$ we perform the ``cut-and-count''
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analysis in a least biased way by masking a two-dimensional invariant mass region
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near the expected $\phi$ and the $B_s$ mean mass positions (blind analysis).
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In this version of the note we therefore estimate figure-of-merit and the
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systematic error on our counting result. After unblinding we perform a
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maximum likelihood fit and treat the analysis as update with increased statistics
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until the conference.
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We extract the final $B_S$ yield for the ICHEP'10 conference with the maximum
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likelihood fit to the invariant $J/\psi \phi$ mass distribution and the proper
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decay length distribution. We also attempt to measure the yield as function
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of the transverse $B_s$ momentum and a value for the proper decay time.
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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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\clearpage
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\input introduction
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\input datasets
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\input trigeff
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\input reconstruction
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\input offsel
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\input Bkgs
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\subsection{Systematic Error}
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For the cut-and-count analysis we establish the following
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efficiencies and potential biases (corrections):
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\begin{itemize}
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\item trigger
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\item charged particle tracking
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\item $B$ vertexing (production vertex)
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\item muon reconstruction, $J/\psi$ candidate reconstruction
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\end{itemize}
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and estimate systematic uncertainties for those.
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Furthermore, we consider ...
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\clearpage
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% \input blindstudies
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% \input cutcount
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\input fit
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\input fitresults
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\input systematics
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\input dqm
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\clearpage
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\appendix
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% \input bkgtables
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% \input datastudy
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\clearpage
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\begin{thebibliography}{9}
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%
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\bibitem{physics}
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I. Dunietz, R. Fleischer, and U. Nierste, ''In persuit of new
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physics with $B_s$ decays'', Phys. Rev. {\bf D63} (2001) 114015.
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\bibitem{angular}
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A.S. Dighe, I. Dinietz, and R. Fleischer, ''Extracting CKM phases
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and $B_s$-$\bar{B}_s$ mixing parameters from angular distributions
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of non-leptonic $B$ decays'', Eur. Phys. J. {\bf C6} (1999) 647;
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A.S. Dighe, I. Dunietz, H.J. Lipkin, and J.L. Rosner, ''Angular
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distributions and lifetime differences in $B_s\to J/\psi \phi$ decays'',
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Phys. Lett. {\bf B369} (1996) 144.
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\bibitem{pdg}
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C. Amsler et al. (Particle Data Group), Phys. Lett. {\bf B667} (2008) 1.
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\bibitem{lotte}
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Lotte Wilke, ''Study of the $B_s$-Meson with the First
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LHC Data'', Ph.D. University of Zuerich (2009).
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\bibitem{nason}
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P. Nason et al., ``Bottom production'', Proceedings of the Workshop
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on Standard Model Physics (and more) at the LHC, CERN, 2000.
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\bibitem{campbell}
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J.M. Campbell, J.W. Huston, W.J. Stirling, ``Hard Interactions
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of Quarks and Gluons: A Primer for LHC Physics'', Rep. Prog. Phys {\bf 70}
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(2007) 89.
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\bibitem{baines}
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J. Baines et al., ''Heavy Quarks (Working Group 3): Summary
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Report for the HERA-LHC Workshop Proceedings'',
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arXiv:hep-ph/0601164.
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\bibitem{aaron}
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J.R. Klein, A. Roodman, ''Blind Analysis in Nuclear and
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Particle Physics'', Annu. Rev. Nucl. Part. Sci. 55 (2005) 141.
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\bibitem{cmssw}
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CMSSW
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\bibitem{pythia}
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H.-U. Bengtsson and T. Sjostrand, ''The Lund Monte Carlo
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for Hadronic Processes: Pythia Version 4.8'', Comput. Phys.
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Commun. {\bf 46} (1987) 43.
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\bibitem{evtgen}
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EvtGen
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\bibitem{hlt}
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Presentation at the Trigger Meeting, March, 2010.
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We update the study as new scenarios are defined.
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%\bibitem{cdfdm} link \\
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%\bibitem{d0dm} link \\
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%
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\end{thebibliography}
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\end{document}
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