Search for heavy resonances decaying into a photon and a hadronically decaying Higgs boson in pp collisions at \sqrts=13 TeV with the ATLAS detector

Franconi, Laura; Haug, Sigve; Weber, Michele; Anders, John Kenneth; Fehr, Armin; Beck, Hans Peter; Ereditato, Antonio; Chatterjee, Meghranjana; Lehmann, Niklaus; Miucci, Antonio; Weston, Thomas Daniel (2020). Search for heavy resonances decaying into a photon and a hadronically decaying Higgs boson in pp collisions at \sqrts=13 TeV with the ATLAS detector. Physical review letters, 125(25) American Physical Society 10.1103/PhysRevLett.125.251802

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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 √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→b¯b) 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:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)
08 Faculty of Science > Physics Institute

UniBE Contributor:

Franconi, Laura; Haug, Sigve; Weber, Michele; Anders, John Kenneth; Fehr, Armin; Beck, Hans Peter; Ereditato, Antonio; Chatterjee, Meghranjana; Lehmann, Niklaus; Miucci, Antonio and Weston, Thomas Daniel

Subjects:

500 Science > 530 Physics

ISSN:

0031-9007

Publisher:

American Physical Society

Language:

English

Submitter:

BORIS Import LHEP

Date Deposited:

19 Apr 2021 16:06

Last Modified:

20 Apr 2021 03:44

Publisher DOI:

10.1103/PhysRevLett.125.251802

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt

BORIS DOI:

10.48350/155543

URI:

https://boris.unibe.ch/id/eprint/155543

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