CMS-EWK-11-009

CMS-EWK-11-009 ; CERN-PH-EP-2013-108
Measurement of the $\mathrm{W} \gamma$ and $\mathrm{Z} \gamma$ inclusive cross sections in pp collisions at $\sqrt{s}$ = 7 TeV and limits on anomalous triple gauge boson couplings
CMS Collaboration
1 September 2013
Phys. Rev. D 89 (2014) 092005
Abstract: Measurements of $W\gamma$ and $Z\gamma$ production in proton-proton collisions at $\sqrt{s}$ = 7 TeV are used to extract limits on anomalous triple gauge couplings. The results are based on data recorded by the CMS experiment at the LHC that correspond to an integrated luminosity of 5.0 inverse femtobarns. The cross sections are measured for photon transverse momenta $p_T^{\gamma} \gt$ 15 GeV, and for separations between photons and final-state charged leptons in the pseudorapidity-azimuthal plane of $\Delta R(l, \gamma) \gt$ 0.7 in $l \nu \gamma$ and $ll \gamma$ final states, where l refers either to an electron or a muon. A dilepton invariant mass requirement of $m_{ll} \gt$ 50 GeV is imposed for the Z $\gamma$ process. No deviations are observed relative to predictions from the standard model, and limits are set on anomalous WW $\gamma$ , ZZ $\gamma$ , and Z $\gamma\gamma$ triple gauge couplings.
Links: e-print arXiv:1308.6832 [hep-ex] (PDF) ; CDS record ; inSPIRE record ; Public twiki page ; HepData record ; CADI line (restricted) ;

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