Artículos de revistas
Measurement of W±γ differential cross sections in proton-proton collisions at s =13 TeV and effective field theory constraints
Date
2022-03-01Registration in:
Physical Review D, v. 105, n. 5, 2022.
2470-0029
2470-0010
10.1103/PhysRevD.105.052003
2-s2.0-85127560044
Author
Yerevan Physics Institute
Institut für Hochenergiephysik
Institute for Nuclear Problems
Universiteit Antwerpen
Vrije Universiteit Brussel
Université Libre de Bruxelles
Ghent University
Université Catholique de Louvain
Centro Brasileiro de Pesquisas Fisicas
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Estadual Paulista (UNESP)
Bulgarian Academy of Sciences
University of Sofia
Beihang University
Tsinghua University
Institute of High Energy Physics
Peking University
Sun Yat-Sen University
Fudan University
China
Universidad de Los Andes
Universidad de Antioquia
Mechanical Engineering and Naval Architecture
Faculty of Science
Institute Rudjer Boskovic
University of Cyprus
Charles University
Escuela Politecnica Nacional
Universidad San Francisco de Quito
Egyptian Network of High Energy Physics
Fayoum University
National Institute of Chemical Physics and Biophysics
University of Helsinki
Helsinki Institute of Physics
Lappeenranta University of Technology
Université Paris-Saclay
Institut Polytechnique de Paris
IPHC UMR 7178
Institut de Physique des 2 Infinis de Lyon (IP2I)
Georgian Technical University
I. Physikalisches Institut
III. Physikalisches Institut A
III. Physikalisches Institut B
Deutsches Elektronen-Synchrotron
University of Hamburg
Karlsruher Institut fuer Technologie
NCSR Demokritos
National and Kapodistrian University of Athens
National Technical University of Athens
University of Ioánnina
Eötvös Loránd University
Wigner Research Centre for Physics
Institute of Nuclear Research ATOMKI
University of Debrecen
MATE Institute of Technology
Indian Institute of Science (IISc)
HBNI
Panjab University
University of Delhi
Indian Institute of Technology Madras
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research-A
Tata Institute of Fundamental Research-B
Indian Institute of Science Education and Research (IISER)
Isfahan University of Technology
Institute for Research in Fundamental Sciences (IPM)
University College Dublin
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Joint Institute for Nuclear Research
Petersburg Nuclear Physics Institute
Institute for Nuclear Research
Inst. for Theoretical and Experimental Physics Named by A.I. Alikhanov of NRC Kurchatov Institute
Moscow Institute of Physics and Technology
National Research Nuclear University Moscow Engineering Physics Institute (MEPhI)
P.N. Lebedev Physical Institute
Lomonosov Moscow State University
Novosibirsk State University (NSU)
Institute for High Energy Physics of National Research Centre Kurchatov Institute
National Research Tomsk Polytechnic University
Tomsk State University
VINCA Institute of Nuclear Sciences
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Universidad Autónoma de Madrid
Instituto Universitario de Ciencias y Tecnologías Espaciales de Asturias (ICTEA)
CSIC-Universidad de Cantabria
University of Colombo
University of Ruhuna
European Organization for Nuclear Research
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ETH Zurich - Institute for Particle Physics and Astrophysics (IPA)
Universität Zürich
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National Taiwan University (NTU)
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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.