Search for anomalous triple gauge couplings in WW and WZ production in lepton + jet events in proton-proton collisions at s√= 13 TeV

The CMS Collaboration, A. M. Sirunyan, A. Tumasyan, P. Eerola, H. Kirschenmann, J. Pekkanen, M. Voutilainen, F. Garcia, J. Havukainen, J.K. Heikkilä, T. Järvinen, V. Karimäki, R. Kinnunen, T. Lampén, K. Lassila-Perini, S. Laurila, S. Lehti, T. Lindén, P. Luukka, T. MäenpääH. Siikonen, E. Tuominen, J. Tuominiemi, T. Tuuva, K. Österberg, L. Forthomme

Research output: Contribution to journalArticleScientificpeer-review

Abstract

A search is presented for three additional operators that would lead to anomalous WWγ or WWZ couplings with respect to those in the standard model. They are constrained by studying events with two vector bosons; a W boson decaying to eν or μν, and a W or Z boson decaying hadronically, reconstructed as a single, massive, large- radius jet. The search uses a data set of proton-proton collisions at a centre-of-mass energy of 13 TeV, recorded by the CMS experiment at the CERN LHC in 2016, and corresponding to an integrated luminosity of 35.9 fb−1. Using the reconstructed diboson invariant mass, 95% confidence intervals are obtained for the anomalous coupling parameters of −1.58 < cWWW/Λ2< 1.59 TeV−2, −2.00 < cW/Λ2< 2.65 TeV−2, and −8.78 < cB/Λ2< 8.54 TeV−2, in agreement with standard model expectations of zero for each parameter. These are the strictest bounds on these parameters to date.
Original languageEnglish
Article number62
JournalJournal of High Energy Physics
Number of pages46
ISSN1029-8479
DOIs
Publication statusPublished - Dec 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 114 Physical sciences

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