Search for non-resonant Higgs boson pair production in final states with leptons, taus, and photons in pp collisions at √s=13 TeV with the ATLAS detector



Aad, G, Aakvaag, E, Abbott, B, Abdelhameed, S, Abeling, K, Abicht, NJ, Abidi, SH, Aboelela, M, Aboulhorma, A, Abramowicz, H
et al (show 2902 more authors) (2024) Search for non-resonant Higgs boson pair production in final states with leptons, taus, and photons in pp collisions at √s=13 TeV with the ATLAS detector JOURNAL OF HIGH ENERGY PHYSICS, 2024 (8). 164-. ISSN 1126-6708, 1029-8479

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Abstract

A search is presented for non-resonant Higgs boson pair production, targeting the bbZZ, 4V (V = W or Z), VVττ, 4τ, γγVV and γγττ decay channels. Events are categorised based on the multiplicity of light charged leptons (electrons or muons), hadronically decaying tau leptons, and photons. The search is based on a data sample of proton-proton collisions at s = 13 TeV recorded with the ATLAS detector during Run 2 of the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb<sup>−1</sup>. No evidence of the signal is found and the observed (expected) upper limit on the cross-section for non-resonant Higgs boson pair production is determined to be 17 (11) times the Standard Model predicted cross-section at 95% confidence level under the background-only hypothesis. The observed (expected) constraints on the HHH coupling modifier, κ<inf>λ</inf>, are determined to be −6.2 < κ<inf>λ</inf>< 11.6 (−4.5 < κ<inf>λ</inf>< 9.6) at 95% confidence level, assuming the Standard Model for the expected limits and that new physics would only affect κ<inf>λ</inf>.

Item Type: Article
Uncontrolled Keywords: Higgs Physics, Hadron-Hadron Scattering
Divisions: Faculty of Science & Engineering
Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 19 Sep 2024 10:11
Last Modified: 23 May 2026 09:14
DOI: 10.1007/JHEP08(2024)164
Open Access URL: https://link.springer.com/article/10.1007/JHEP08(2...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3184598
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