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Measurement of the W gamma Production Cross Section in Proton-Proton Collisions at root s=13 TeV and Constraints on Effective Field Theory Coefficients

Abstract: A fiducial cross section for W? 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? and ?? 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.

 Fuente: Phys. Rev. Lett. 126, 252002 (2021)

 Editorial: American Physical Society

 Fecha de publicación: 25/06/2021

 Nº de páginas: 18

 Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.126.252002

 ISSN: 0031-9007,1079-7114

 Url de la publicación: https://doi.org/10.1103/PhysRevLett.126.252002