Search for Heavy Resonances Decaying into a Photon and a Hadronically Decaying Higgs Boson in <i>pp</i> Collisions at √<i>s</i>=13 TeV with the ATLAS Detector



Aad, G, Abbott, B, Abbott, DC, Abud, A, Abeling, K, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2945 more authors) (2020) Search for Heavy Resonances Decaying into a Photon and a Hadronically Decaying Higgs Boson in <i>pp</i> Collisions at √<i>s</i>=13 TeV with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 125 (25). 251802-.

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Abstract

This Letter presents a search for the production of new heavy resonances decaying into a Higgs boson and a photon using proton-proton collision data at sqrt[s]=13  TeV collected by the ATLAS detector at the LHC. The data correspond to an integrated luminosity of 139  fb^{-1}. The analysis is performed by reconstructing hadronically decaying Higgs boson (H→bb[over ¯]) candidates as single large-radius jets. A novel algorithm using information about the jet constituents in the center-of-mass frame of the jet is implemented to identify the two b quarks in the single jet. No significant excess of events is observed above the expected background. Upper limits are set on the production cross-section times branching fraction for narrow spin-1 resonances decaying into a Higgs boson and a photon in the resonance mass range from 0.7 to 4 TeV, cross-section times branching fractions are excluded between 11.6 fb and 0.11 fb at a 95% confidence level.

Item Type: Article
Additional Information: 26 pages in total, author list starting page 10, 3 figures, 0 tables, submitted to Phys. Rev. Lett. All figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HDBS-2018-17/
Uncontrolled Keywords: ATLAS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 11 Jan 2021 09:04
Last Modified: 13 Oct 2023 19:10
DOI: 10.1103/PhysRevLett.125.251802
Open Access URL: https://journals.aps.org/prl/abstract/10.1103/Phys...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3113234