Measurement of W ± γ differential cross sections in proton-proton collisions at √ s = 13 TeV and effective field theory constraints
dc.contributor.author | Tumasyan, Armen | pt_BR |
dc.contributor.author | Silveira, Gustavo Gil da | pt_BR |
dc.contributor.author | Bernardes, César Augusto | pt_BR |
dc.contributor.author | CMS Collaboration | pt_BR |
dc.date.accessioned | 2022-04-15T04:43:25Z | pt_BR |
dc.date.issued | 2022 | pt_BR |
dc.identifier.issn | 0556-2821 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/237317 | pt_BR |
dc.description.abstract | Differential cross section measurements of W ± γ production in proton-proton collisions at √ s = 13 TeV are presented. The data set used in this study was collected with the CMS detector at the CERN LHC in 2016–2018 with an integrated luminosity of 138 fb − 1 . Candidate events containing an electron or muon, a photon, and missing transverse momentum are selected. The measurements are compared with standard model predictions computed at next-to-leading and next-to-next-to-leading orders in perturbative quantum chromodynamics. Constraints on the presence of TeV-scale new physics affecting the W W γ vertex are determined within an effective field theory framework, focusing on the O 3 W operator. A simultaneous measurement of the photon transverse momentum and the azimuthal angle of the charged lepton in a special reference frame is performed. This two-dimensional approach provides up to a factor of ten more sensitivity to the interference between the standard model and the O 3 W contribution than using the transverse momentum alone. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physical Review. D, Particles and fields. Woodbury. Vol. 105, no. 5 (Mar. 2022), 052003, 34 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Aceleradores de partículas | pt_BR |
dc.subject | Colisões proton-proton | pt_BR |
dc.subject | Bosons | pt_BR |
dc.title | Measurement of W ± γ differential cross sections in proton-proton collisions at √ s = 13 TeV and effective field theory constraints | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001139748 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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