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Measurement of W$\gamma$ production cross section in proton-proton collisions at $\sqrt{s} =$ 13 TeV and constraints on effective field theory coefficients

The CMS collaboration
CMS-SMP-19-002, 2021.

Abstract (data abstract)
CERN-LHC. A fiducial cross section for Wgamma production in proton-proton collisions is measured at a center-of-mass energy of 13 TeV in 137 fb^-1 of data collected using the CMS detector at the LHC. The W to e nu and mu nu decay modes are used in a maximum-likelihood fit to the lepton-photon invariant mass distribution to extract the combined cross section. The measured cross section is compared with theoretical expectations at next-to-leading order in quantum chromodynamics. In addition, 95% confidence level intervals are reported for anomalous triple-gauge couplings using effective field theory and using the Lagrangian approach (a.k.a. the LEP parametrization).

  • Table 1

    Data from Page 4 of preprint

    10.17182/hepdata.102462.v1/t1

    The measured Wgamma fiducial cross section and corresponding theoretical predictions from MadGraph5_aMC@NLO and POWHEG. The MadGraph5_aMC@NLO prediction includes 0 and...

  • Table 2

    Data from Page 6 of preprint

    10.17182/hepdata.102462.v1/t2

    Data and SM expected event yields corresponding to photon pt distribution used to extract aTGC limits.

  • Table 3

    Data from Page 6 of preprint

    10.17182/hepdata.102462.v1/t3

    95% CL limits on effective field theory parameters in Wgamma events. No unitarity regularisation scheme is applied. All parameters are...

  • Table 4

    Data from Page 5 of preprint

    10.17182/hepdata.102462.v1/t4

    95% CL limits on the Lagrangian approach (a.k.a. LEP parametrization) parameters in Wgamma events.

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