en
Scientific article
Open access
English

Search for Resonant and Nonresonant Higgs Boson Pair Production in the bb¯τ+τ− Decay Channel in pp Collisions at √s = 13 TeV with the ATLAS Detector

ContributorsATLAS Collaboration
Published inPhysical Review Letters, vol. 121, no. 19
Collection
  • Open Access - SCOAP3
Publication date2018
Abstract

A search for resonant and nonresonant pair production of Higgs bosons in the bb¯τ+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<402 GeV in the simplified hMSSM minimal supersymmetric model for tanβ=2 and excluding bulk Randall-Sundrum gravitons GKK in the mass range 325 GeV<885 GeV for k/M¯Pl=1.

Citation (ISO format)
ATLAS Collaboration. Search for Resonant and Nonresonant Higgs Boson Pair Production in the bb¯τ+τ− Decay Channel in pp Collisions at √s = 13 TeV with the ATLAS Detector. In: Physical Review Letters, 2018, vol. 121, n° 19. doi: 10.1103/PhysRevLett.121.191801
Main files (1)
Article (Published version)
Identifiers
ISSN of the journal0031-9007
271views
118downloads

Technical informations

Creation12/04/2018 10:35:06 AM
First validation12/04/2018 10:35:06 AM
Update time03/15/2023 3:08:41 PM
Status update03/15/2023 3:08:41 PM
Last indexation02/12/2024 11:36:38 AM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack