Publication: Measurement of the Wγ Production Cross Section in Proton-Proton Collisions at √s=13 TeV and Constraints on Effective Field Theory Coefficients
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RWTH Aachen University
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Abstract
A fiducial cross section for $Wγ$ 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 $W→eν$ and $μν$ 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 within the framework of effective field theory.
Physical review letters 126(25), 252002 (1-18) (2021). doi:10.1103/PhysRevLett.126.252002
Published by APS, College Park, Md.
Physical review letters 126(25), 252002 (1-18) (2021). doi:10.1103/PhysRevLett.126.252002
Published by APS, College Park, Md.
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GeV-cms, S043A00, Effective field theory, Perturbative QCD, W &, Z bosons, Hadron colliders, Particles &, Fields, CMS, W: leptonic decay, Engineering, high energy physics, High Energy Physics - Experiment, mass spectrum, effective field theory, High Energy Physics Experiments, CMS, Standard Model, Wgamma production cross section, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], LHC, CMS, pp interactions, info:eu-repo/classification/ddc/530, A-center, Center-of-mass energies, Centre-of-mass energies, CMS detectors, Decay mode, Effective field theory, Maximum-likelihood, Measurements of, Production cross section, Proton proton collisions, Quantum theory, Tellurium compounds, Wgamma, Physical Sciences, vector boson: pair production, CMS, Physics, ddc:530, perturbation theory: higher-order, higher-order: 1, LHC CMS, CERN LHC Coll, CMS Collaboration, gauge boson: coupling, W: associated production, channel cross section: measured, General Physics, p p: scattering, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], coupling constant: upper limit, decay modes, quantum chromodynamics, coupling: (3gauge boson), TeV, quantum chromodynamics: perturbation theory, coupling: anomaly, Mathematical Sciences, mass spectrum: (lepton photon), hep-ex, cross section: measured, photon: associated production, * Automatic Keywords *, Physics and Astronomy, Hadron - hadron collision, experimental results