Measurement of the W Gamma Production Cross Ssection in Proton-Proton Collisions at Root S=13 Tev and Constraints on Effective Field Theory Coefficients

Karapınar, GülerCMS Collaboration2021-11-062021-11-0620210031-90071079-7114https://doi.org/10.1103/PhysRevLett.126.252002https://hdl.handle.net/11147/11623A fiducial cross section for W gamma 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 -> 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 within the framework of effective field theory.eninfo:eu-repo/semantics/openAccessProton–proton collisionsMeasurement of the W Gamma Production Cross Ssection in Proton-Proton Collisions at Root S=13 Tev and Constraints on Effective Field Theory CoefficientsArticle2-s2.0-8510890881110.1103/PhysRevLett.126.252002