Collaboration, ATLAS
(2022)
Search for resonant and non-resonant Higgs boson pair production in the
$b\bar bτ^+τ^-$ decay channel using 13 TeV $pp$ collision data from the
ATLAS detector.
[Preprint]
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Text
2209.10910v1.pdf - Submitted version Download (1MB) | Preview |
Abstract
A search for Higgs boson pair production in events with two $b$-jets and two $\tau$-leptons is presented, using a proton-proton collision dataset with an integrated luminosity of 139 fb$^{-1}$ collected at $\sqrt{s}=13$ TeV by the ATLAS experiment at the LHC. Higgs boson pairs produced non-resonantly or in the decay of a narrow scalar resonance in the mass range from 251 to 1600 GeV are targeted. Events in which at least one $\tau$-lepton decays hadronically are considered, and multivariate discriminants are used to reject the backgrounds. No significant excess of events above the expected background is observed in the non-resonant search. The largest excess in the resonant search is observed at a resonance mass of 1 TeV, with a local (global) significance of $3.1\sigma$ ($2.0\sigma$). Observed (expected) 95% confidence-level upper limits are set on the non-resonant Higgs boson pair-production cross-section at 4.7 (3.9) times the Standard Model prediction, assuming Standard Model kinematics, and on the resonant Higgs boson pair-production cross-section at between 21 and 900 fb (12 and 840 fb), depending on the mass of the narrow scalar resonance.
| Item Type: | Preprint |
|---|---|
| Additional Information: | 59 pages in total, author list starting page 42, 10 figures, 6 tables, published in JHEP. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HDBS-2018-40 |
| Uncontrolled Keywords: | hep-ex, hep-ex |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 27 Oct 2022 16:29 |
| Last Modified: | 01 Aug 2023 20:26 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3165789 |
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