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

Aad, G ; Åkesson, Torsten LU orcid ; Bocchetta, Simona LU ; Corrigan, Eric Edward LU ; Doglioni, Caterina LU ; Geisen, Jannik LU orcid ; Gregersen, Kristian LU ; Brottmann Hansen, Eva LU ; Hedberg, Vincent LU and Jarlskog, Göran LU , et al. (2020) In Physical Review Letters 125(25).
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 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¯) 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... (More)
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→bb¯) 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. © 2020 CERN. (Less)
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author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Decay (organic), Photons, Resonance, ATLAS detectors, Branching fractions, Center of mass, Confidence levels, Integrated luminosity, Novel algorithm, Production cross section, Proton proton collisions, Bosons
in
Physical Review Letters
volume
125
issue
25
article number
251802
publisher
American Physical Society
external identifiers
  • scopus:85098151353
  • pmid:33416363
ISSN
1079-7114
DOI
10.1103/PhysRevLett.125.251802
language
English
LU publication?
yes
id
889144ac-939c-486b-878c-cbc4942f0b63
date added to LUP
2021-01-05 10:30:01
date last changed
2023-04-11 03:06:54
@article{889144ac-939c-486b-878c-cbc4942f0b63,
  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 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¯) 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. © 2020 CERN.}},
  author       = {{Aad, G and Åkesson, Torsten and Bocchetta, Simona and Corrigan, Eric Edward and Doglioni, Caterina and Geisen, Jannik and Gregersen, Kristian and Brottmann Hansen, Eva and Hedberg, Vincent and Jarlskog, Göran and Kellermann, Edgar and Konya, Balazs and Lytken, Else and Mankinen, Katja and Marcon, Caterina and Mjörnmark, Ulf and Mullier, Geoffrey André Adrien and Pöttgen, Ruth and Poulsen, Trine and Skorda, Eleni and Smirnova, Oxana and Zwalinski, L}},
  issn         = {{1079-7114}},
  keywords     = {{Decay (organic); Photons; Resonance; ATLAS detectors; Branching fractions; Center of mass; Confidence levels; Integrated luminosity; Novel algorithm; Production cross section; Proton proton collisions; Bosons}},
  language     = {{eng}},
  number       = {{25}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Search for Heavy Resonances Decaying into a Photon and a Hadronically Decaying Higgs Boson in pp Collisions at s =13 TeV with the ATLAS Detector}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.125.251802}},
  doi          = {{10.1103/PhysRevLett.125.251802}},
  volume       = {{125}},
  year         = {{2020}},
}