Evidence for electroweak production of four charged leptons and two jets in proton-proton collisions at root s=13 TeV
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Evidence is presented for the electroweak (EW) production of two jets (jj) in association with two Zbosons and constraints on anomalous quartic gauge couplings are set. The analysis is based on a data sample of proton-proton collisions at √s=13 TeV collected with the CMS detector in 2016–2018, and corresponding to an integrated luminosity of 137 fb−1. The search is performed in the fully leptonic final state ZZ→ ′ ′, where , ′=e, μ. The EW production of two jets in association with two Z bosons is measured with an observed (expected) significance of 4.0 (3.5) standard deviations. The cross sections for the EW production are measured in three fiducial volumes and the result is σEW(pp→ZZjj→ ′ ′jj) =0.33+0.11−0.10(stat)+0.04−0.03(syst) fb in the most inclusive volume, in agreement with the standard model prediction of 0.275 ±0.021 fb. Measurements of total cross sections for jj production in association with two Z bosons are also reported. Limits on anomalous quartic gauge couplings are derived in terms of the effective field theory operators T0, T1, T2, T8, and T9.
Date Issued
2021-01-10
Date Acceptance
2020-11-30
Citation
Physics Letters B: Nuclear Physics and Particle Physics, 2021, 812, pp.1-25
ISSN
0370-2693
Publisher
Elsevier
Start Page
1
End Page
25
Journal / Book Title
Physics Letters B: Nuclear Physics and Particle Physics
Volume
812
Copyright Statement
©2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP.
License URL
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000608167600005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Nuclear
Physics, Particles & Fields
Physics
CMS
SM
ZZ
VBS
aQGC
ZZ PRODUCTION
BOSON
EVENTS
MASS
Publication Status
Published
Article Number
ARTN 135992
Date Publish Online
2020-12-03