Search for high-mass W γ and Zγ resonances using hadronic W/Z boson decays from 139 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector

UBC Faculty Research and Publications

Search for high-mass W γ and Zγ resonances using hadronic W/Z boson decays from 139 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector ATLAS Collaboration

Abstract

A search for high-mass charged and neutral bosons decaying to W γ and Zγ final states is presented in this paper. The analysis uses a data sample of √ s = 13 TeV proton-proton collisions with an integrated luminosity of 139 fb−1 collected by the ATLAS detector during LHC Run 2 operation. The sensitivity of the search is determined using models of the production and decay of spin-1 charged bosons and spin-0/2 neutral bosons. The range of resonance masses explored extends from 1.0 TeV to 6.8 TeV. At these high resonance masses, it is beneficial to target the hadronic decays of the W and Z bosons because of their large branching fractions. The decay products of the high-momentum W/Z bosons are strongly collimated and boosted-boson tagging techniques are employed to improve the sensitivity. No evidence of a signal above the Standard Model backgrounds is observed, and upper limits on the production cross-sections of these bosons times their branching fractions to W γ and Zγ are derived for various boson production models.

Item Metadata

Title	Search for high-mass W γ and Zγ resonances using hadronic W/Z boson decays from 139 fb−1 of pp collisions at √s = 13 TeV with the ATLAS detector
Creator	ATLAS Collaboration
Publisher	Springer Berlin Heidelberg
Date Issued	2023-07-14
Description	A search for high-mass charged and neutral bosons decaying to W γ and Zγ final states is presented in this paper. The analysis uses a data sample of √ s = 13 TeV proton-proton collisions with an integrated luminosity of 139 fb−1 collected by the ATLAS detector during LHC Run 2 operation. The sensitivity of the search is determined using models of the production and decay of spin-1 charged bosons and spin-0/2 neutral bosons. The range of resonance masses explored extends from 1.0 TeV to 6.8 TeV. At these high resonance masses, it is beneficial to target the hadronic decays of the W and Z bosons because of their large branching fractions. The decay products of the high-momentum W/Z bosons are strongly collimated and boosted-boson tagging techniques are employed to improve the sensitivity. No evidence of a signal above the Standard Model backgrounds is observed, and upper limits on the production cross-sections of these bosons times their branching fractions to W γ and Zγ are derived for various boson production models.
Subject	Hadron-Hadron Scattering
Genre	Article
Type	Text
Language	eng
Date Available	2023-09-18
Provider	Vancouver : University of British Columbia Library
Rights	Attribution 4.0 International (CC BY 4.0)
DOI	10.14288/1.0435913
URI	http://hdl.handle.net/2429/85955
Affiliation	Science, Faculty of; TRIUMF; Non UBC; Physics and Astronomy, Department of
Citation	Journal of High Energy Physics. 2023 Jul 14;2023(7):125
Publisher DOI	10.1007/JHEP07(2023)125
Peer Review Status	Reviewed
Scholarly Level	Faculty; Researcher
Copyright Holder	The Author(s)
Rights URI	http://creativecommons.org/licenses/by/4.0/
Aggregated Source Repository	DSpace

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