Article révisé par les pairs
Résumé : 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.

Documents en relation

DI-fusion

  • Nuclear modification of Y states in pPb collisions at √sNN = 5.02 TeV
    par Tumasyan, A. , Beghin, Diego , Bilin, Bugra , Clerbaux, Barbara , De Lentdecker, Gilles , Delannoy, Hugo , Dorney, Brian , Favart, Laurent , Grebenyuk, Anastasia , Kalsi, Amandeep Kaur , Malara, Andrea , Moureaux, Louis , Popov, Andrey , Postiau, Nicolas , Starling, Elizabeth Rose , Thomas, Laurent , Vander Velde, Catherine , Vanlaer, Pascal , Vannerom, David
    Publication 2022-12-10
  • First Search for Exclusive Diphoton Production at High Mass with Tagged Protons in Proton-Proton Collisions at √s = 13 TeV
    par Tumasyan, A. , Beghin, Diego , Bilin, Bugra , Clerbaux, Barbara , De Lentdecker, Gilles , Dorney, Brian , Favart, Laurent , Grebenyuk, Anastasia , Kalsi, Amandeep Kaur , Makarenko, Inna , Malara, Andrea , Moureaux, Louis , Pétré, Laurent , Popov, Andrey , Postiau, Nicolas , Starling, Elizabeth Rose , Thomas, Laurent , Vander Velde, Catherine , Vanlaer, Pascal , Vannerom, David , Wezenbeek, Liam
    Publication 2022-07-01
  • Observation of B0 s mesons and measurement of the B0 s /B+ yield ratio in PbPb collisions at √snn = 5.02 TeV
    par Tumasyan, A. , Beghin, Diego , Bilin, Bugra , Clerbaux, Barbara , De Lentdecker, Gilles , Dorney, Brian , Favart, Laurent , Grebenyuk, Anastasia , Kalsi, Amandeep Kaur , Makarenko, Inna , Malara, Andrea , Moureaux, Louis , Pétré, Laurent , Popov, Andrey , Postiau, Nicolas , Starling, Elizabeth Rose , Thomas, Laurent , Vander Velde, Catherine , Vanlaer, Pascal , Vannerom, David , Wezenbeek, Liam
    Publication 2022-06-10
  • First measurement of the forward rapidity gap distribution in pPb collisions at √sNN = 8.16 TeV
    par Tumasyan, A. , Beghin, Diego , Bilin, Bugra , Clerbaux, Barbara , De Lentdecker, Gilles , Dorney, Brian , Favart, Laurent , Grebenyuk, Anastasia , Kalsi, Amandeep Kaur , Makarenko, Inna , Moureaux, Louis , Pétré, Laurent , Popov, Andrey , Postiau, Nicolas , Starling, Elizabeth Rose , Thomas, Laurent , Vander Velde, Catherine , Vanlaer, Pascal , Vannerom, David , Wezenbeek, Liam , Malara, Andrea
    Publication 2023-01-01
  • Azimuthal Correlations within Exclusive Dijets with Large Momentum Transfer in Photon-Lead Collisions
    par Tumasyan, A. , Malara, Andrea , Beghin, Diego , Bilin, Bugra , Clerbaux, Barbara , De Lentdecker, Gilles , Dorney, Brian , Favart, Laurent , Grebenyuk, Anastasia , Kalsi, Amandeep Kaur , Makarenko, Inna , Moureaux, Louis , Pétré, Laurent , Popov, Andrey , Postiau, Nicolas , Starling, Elizabeth Rose , Thomas, Laurent , Vander Velde, Catherine , Vanlaer, Pascal , Vannerom, David , Wezenbeek, Liam
    Publication 2023-01-01