Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/10810
Title: Search for resonant and non-resonant Higgs boson pair production in the bb¯ τ+τ− decay channel using 13 TeV pp collision data from the ATLAS detector
Authors: Aad, G.
Abbott, B.
Abbott, D.C.
Abed, Abud, A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
Keywords: Hadron-Hadron Scattering
Higgs Physics
Proton-Proton Scattering
Issue Date: 2023
Publisher: Springer Science and Business Media Deutschland GmbH
Abstract: A search for Higgs boson pair production in events with two b-jets and two τ-leptons is presented, using a proton–proton collision dataset with an integrated luminosity of 139 fb−1 collected at 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 τ-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 3.1σ (2.0σ). 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. [Figure not available: see fulltext.] © 2023, The Author(s).
URI: https://doi.org/10.1007/JHEP07(2023)040
https://hdl.handle.net/20.500.11851/10810
ISSN: 1029-8479
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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