Vincent Hedberg
Senior lecturer
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
Author
Summary, in English
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.
Department/s
- Particle and nuclear physics
- eSSENCE: The e-Science Collaboration
Publishing year
2020
Language
English
Publication/Series
Physical Review Letters
Volume
125
Issue
25
Document type
Journal article
Publisher
American Physical Society
Topic
- Subatomic Physics
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
Status
Published
ISBN/ISSN/Other
- ISSN: 1079-7114