Search for Wγ resonances in proton-proton collisions at vs=13 TeV using hadronic decays of Lorentz-boosted W bosons

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The CMS Collaboration , Tumasyan , A , Adam , W , Eerola , P , Forthomme , L , Kirschenmann , H , Österberg , K , Voutilainen , M , Brücken , E , Garcia , F , Havukainen , J , Heikkilä , J , Karimäki , V , Kim , M , Kinnunen , R , Kortelainen , M , Lampén , T , Lassila-Perini , K , Laurila , S , Lehti , S , Lindén , T , Lotti , M , Luukka , P , Pekkanen , J , Siikonen , H , Tuominen , E , Tuominiemi , J , Viinikainen , J , Petrow , H & Tuuva , T 2022 , ' Search for Wγ resonances in proton-proton collisions at vs=13 TeV using hadronic decays of Lorentz-boosted W bosons ' , Physics Letters B , vol. 826 , 136888 . https://doi.org/10.1016/j.physletb.2022.136888

Title: Search for Wγ resonances in proton-proton collisions at vs=13 TeV using hadronic decays of Lorentz-boosted W bosons
Author: The CMS collaboration; Tumasyan, A.; Adam, W.; Eerola, P.; Forthomme, Laurent; Kirschenmann, H.; Österberg, K.; Voutilainen, M.; Brücken, Erik; Garcia, F.; Havukainen, J.; Heikkilä, Jaana; Karimäki, Veikko; Kim, Minsuk; Kinnunen, R.; Kortelainen, Matti; Lampén, T.; Lassila-Perini, K.; Laurila, S.; Lehti, S.; Lindén, T.; Lotti, Mikko; Luukka, P.; Pekkanen, Juska; Siikonen, H.; Tuominen, E.; Tuominiemi, J.; Viinikainen, Jussi; Petrow, H.; Tuuva, T.
Contributor organization: Department of Physics
Helsinki Institute of Physics
Date: 2022-03-10
Language: eng
Number of pages: 28
Belongs to series: Physics Letters B
ISSN: 0370-2693
DOI: https://doi.org/10.1016/j.physletb.2022.136888
URI: http://hdl.handle.net/10138/346076
Abstract: A search for W gamma resonances in the mass range between 0.7 and 6.0 TeV is presented. The W boson is reconstructed via its hadronic decays, with the final-state products forming a single large-radius jet, owing to a high Lorentz boost of the W boson. The search is based on proton-proton collision data at root s = 13 TeV, corresponding to an integrated luminosity of 137 fb(-1), collected with the CMS detector at the LHC in 2016-2018. The W gamma mass spectrum is parameterized with a smoothly falling background function and examined for the presence of resonance-like signals. No significant excess above the predicted background is observed. Model-specific upper limits at 95% confidence level on the product of the cross section and branching fraction to the W gamma channel are set. Limits for narrow resonances and for resonances with an intrinsic width equal to 5% of their mass, for spin-0 and spin-1 hypotheses, range between 0.17 fb at 6.0 TeV and 55 fb at 0.7 TeV. These are the most restrictive limits to date on the existence of such resonances over a large range of probed masses. In specific heavy scalar (vector) triplet benchmark models, narrow resonances with masses between 0.75 (1.15) and 1.40 (1.36) TeV are excluded for a range of model parameters. Model-independent limits on the product of the cross section, signal acceptance, and branching fraction to the W gamma channel are set for minimum W gamma mass thresholds between 1.5 and 8.0 TeV. (C)& nbsp;2022 The Author(s). Published by Elsevier B.V.& nbsp;
Subject: 114 Physical sciences
CMS
Wgamma resonances
BSM particles
SYMMETRY-BREAKING
HIGGS BOSONS
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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