CERN Accelerating science

LHCb Note
Report number LHCb-CONF-2012-011 ; CERN-LHCb-CONF-2012-011
Title Measurement of the cross-section for Z$^0\rightarrow$ e$^+$e$^-$ production in pp collisions at $\sqrt{s}$ = 7 TeV
Corporate author(s) The LHCb Collaboration
Collaboration LHCb Collaboration
Note Linked to LHCb-ANA-2012-015
Submitted to 20th International Workshop on Deep-Inelastic Scattering and Related Subjects, Bonn, Germany, 26 - 30 Mar 2012
Submitted by [email protected] on 05 Mar 2012
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords electroweak interaction ; QCD ; forward physics
Abstract A measurement of the cross-section for Z$^0\rightarrow$ e$^+$e$^-$ at $\sqrt{s}$ = 7 TeV is presented using LHCb data recorded in 2011 corresponding to an integrated luminosity of 945 pb$^{-1}$. Within the kinematic acceptance, $p_{\mathrm{T}}$ > 20 GeV and 2 < $\eta$ < 4.5 for the leptons and 60 < $M$ < 120 GeV and 2 < $y$ < 4 for the Z$^0$, the cross-section is measured to be \begin{align} \sigma(Z^0 \to e^+ e^-) = 75.7 \pm 0.5 \mathrm{(stat.)} \pm 2.4 \mathrm{(syst.)} \pm 2.6 \mathrm{(lumi.) pb.} \end{align} The results are compared with previous measurements and with theoretical predictions using QCD at NNLO.
Copyright/License Preprint: (License: CC-BY-4.0)
Related document Superseded by LHCB-PAPER-2012-036

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Email contact(s) : [email protected]


 Record created 2012-03-05, last modified 2018-06-11


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