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Measurement of the $W\gamma$ and $Z\gamma$ inclusive cross sections in $pp$ collisions at $\sqrt s=7$  TeV and limits on anomalous triple gauge boson couplings

The CMS collaboration
Phys.Rev. D89 (2014) 092005, 2014

Abstract (data abstract)
CERN-LHC. Measurements of W gamma and Z gamma production in proton-proton collisions at a centre-of-mass energy of 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 fb-1. The cross sections are measured for photon transverse momenta p_T^gamma > 15 GeV, and for separations between photons and final-state charged leptons in the pseudorapidity-azimuthal plane of DeltaR(l,gamma) > 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) > 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.

  • Table 1

    Data from T 9, P ?

    10.17182/hepdata.64877.v1/t1

    Summary of the measured and predicted cross sections for p_T^gamma > 15 GeV/c for Wgamma production.

  • Table 2

    Data from T 9,P ?

    10.17182/hepdata.64877.v1/t2

    Summary of the measured and predicted cross sections for p_T^gamma > 15 GeV/c for Zgamma production.

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