Measurements of the pp -> W-+/-gamma gamma and pp -> Z gamma gamma cross sections at root s=13 TeV and limits on anomalous quartic gauge couplings
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Published version
Author(s)
Type
Journal Article
Abstract
The cross section for W or Z boson production in association with two photons
is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data set
corresponds to an integrated luminosity of 137 fb−1
collected by the CMS experiment at
the LHC. The W → `ν and Z → `` decay modes (where ` = e, µ) are used to extract the
Wγγ and Zγγ cross sections in a phase space defined by electron (muon) with transverse
momentum larger than 30 GeV and photon transverse momentum larger than 20 GeV.
All leptons and photons are required to have absolute pseudorapidity smaller than 2.5.
The measured cross sections in this phase space are σ(Wγγ) = 13.6
+1.9
−1.9
(stat)+4.0
−4.0
(syst) ±
0.08 (PDF + scale)fb and σ(Zγγ) = 5.41+0.58
−0.55 (stat)+0.64
−0.70 (syst) ± 0.06 (PDF + scale)fb.
Limits on anomalous quartic gauge couplings are set in the framework of an effective
field theory with dimension-8 operators.
is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data set
corresponds to an integrated luminosity of 137 fb−1
collected by the CMS experiment at
the LHC. The W → `ν and Z → `` decay modes (where ` = e, µ) are used to extract the
Wγγ and Zγγ cross sections in a phase space defined by electron (muon) with transverse
momentum larger than 30 GeV and photon transverse momentum larger than 20 GeV.
All leptons and photons are required to have absolute pseudorapidity smaller than 2.5.
The measured cross sections in this phase space are σ(Wγγ) = 13.6
+1.9
−1.9
(stat)+4.0
−4.0
(syst) ±
0.08 (PDF + scale)fb and σ(Zγγ) = 5.41+0.58
−0.55 (stat)+0.64
−0.70 (syst) ± 0.06 (PDF + scale)fb.
Limits on anomalous quartic gauge couplings are set in the framework of an effective
field theory with dimension-8 operators.
Date Issued
2021-10-21
Date Acceptance
2021-08-20
Citation
The Journal of High Energy Physics, 2021, 174 (10)
ISSN
1029-8479
Publisher
Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Journal / Book Title
The Journal of High Energy Physics
Volume
174
Issue
10
Copyright Statement
Open Access, Copyright CERN. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
License URL
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000711436000001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
Hadron-Hadron scattering (experiments)
Particle and resonance production
Publication Status
Published
Article Number
ARTN 174