Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/12884
Title: Measurement of W-+/-gamma differential cross sections in proton-proton collisions at root s=13 TeV and effective field theory constraints
Authors: Tumasyan, A.
CMS Collaboration
Keywords: Gauge-Theory
Zeros
Amplitudes
Issue Date: 2022
Publisher: Amer Physical Soc
Abstract: Differential cross section measurements of W(+/-)y production in proton-proton collisions at root 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 WW gamma vertex are determined within an effective field theory framework, focusing on the O-3w 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-3w contribution than using the transverse momentum alone.
URI: https://doi.org/10.1103/PhysRevD.105.052003
https://hdl.handle.net/11147/12884
ISSN: 2470-0010
2470-0029
Appears in Collections:Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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