Title
Measurement of W<tex>$\gamma$</tex> and Z<tex>$\gamma$</tex> production in pp collisions at <tex>$\sqrt{s}$</tex> = 7 TeV Measurement of W<tex>$\gamma$</tex> and Z<tex>$\gamma$</tex> production in pp collisions at <tex>$\sqrt{s}$</tex> = 7 TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Amsterdam ,
Subject
Physics
Source (journal)
Physics letters: B. - Amsterdam, 1967, currens
Volume/pages
701(2011) :5 , p. 535-555
ISSN
0370-2693
ISI
000293438100005
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A measurement of Wγ and Zγ production in protonproton collisions at View the MathML source is presented. Results are based on a data sample recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 36 pb−1. The electron and muon decay channels of the W and Z are used. The total cross sections are measured for photon transverse energy View the MathML source and spatial separation from charged leptons in the plane of pseudorapidity and azimuthal angle ΔR(&#8467;,γ)>0.7, and with an additional dilepton invariant mass requirement of M&#8467;&#8467;>50 GeV for the Zγ process. The following cross section times branching fraction values are found: σ(pp→Wγ+X)×B(W→&#8467;ν)=56.3±5.0(stat.)±5.0(syst.)±2.3(lumi.) pb and σ(pp→Zγ+X)×B(Z→&#8467;&#8467;)=9.4±1.0(stat.)±0.6(syst.)±0.4(lumi.) pb. These measurements are in agreement with standard model predictions. The first limits on anomalous WWγ, ZZγ, and Zγγ trilinear gauge couplings at View the MathML source are set.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/8e2057/cb84265e.pdf
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