Document Type
Article
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 WWγ vertex are determined within an effective field theory framework, focusing on the O3W 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 O3W contribution than using the transverse momentum alone.
Department(s)
Physics and Engineering
Publication Title
Physical Review D
Volume
105
Issue
5
Publication Date
3-1-2022
DOI
10.1103/PhysRevD.105.052003
ISSN
24700010
E-ISSN
24700029
Recommended Citation
The CMS Collaboration; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; and Hogan, Julie M., "Measurement of W±γ differential cross sections in proton-proton collisions at s =13 TeV and effective field theory constraints" (2022). Physics and Engineering Faculty Publications. 37.
https://spark.bethel.edu/physics-faculty/37
Comments
The CMS Collaboration includes over 100 authors. This record includes the Bethel author and the first 5 authors listed. The full list of authors can be viewed on the downloaded document or at the original publisher's website - https://doi.org/10.1103/PhysRevD.105.052003