Vincent Hedberg
Senior lecturer
Search for Resonant and Nonresonant Higgs Boson Pair Production in the b b τ+τ- Decay Channel in pp Collisions at s =13 TeV with the ATLAS Detector
Author
Summary, in English
A search for resonant and nonresonant pair production of Higgs bosons in the bbτ+τ- final state is presented. The search uses 36.1 fb-1 of pp collision data with s=13 TeV recorded by the ATLAS experiment at the LHC in 2015 and 2016. Decays of the τ-lepton pairs with at least one τ lepton decaying to final states with hadrons and a neutrino are considered. No significant excess above the expected background is observed in the data. The cross-section times branching ratio for nonresonant Higgs boson pair production is constrained to be less than 30.9 fb, 12.7 times the standard model expectation, at 95% confidence level. The data are also analyzed to probe resonant Higgs boson pair production, constraining a model with an extended Higgs sector based on two doublets and a Randall-Sundrum bulk graviton model. Upper limits are placed on the resonant Higgs boson pair production cross-section times branching ratio, excluding resonances X in the mass range 305 GeV
Department/s
- Particle and nuclear physics
- eSSENCE: The e-Science Collaboration
Publishing year
2018
Language
English
Publication/Series
Physical Review Letters
Volume
121
Issue
19
Document type
Journal article
Publisher
American Physical Society
Topic
- Subatomic Physics
Keywords
- Dynamic mechanical analysis
- Germanium compounds
- Gravitation
- Photons
- Tellurium compounds
- ATLAS detectors
- ATLAS experiment
- Confidence levels
- Randall Sundrum gravitons
- Randall-Sundrum
- Supersymmetric models
- Tau lepton pairs
- The standard model
- Bosons
Status
Published
ISBN/ISSN/Other
- ISSN: 1079-7114