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

Springer Berlin Heidelberg

A search is presented for non-resonant Higgs boson pair production, targeting the bbZZ, 4V (V = W or Z), V V τ τ , 4τ , γγV V and γγτ τ 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−1 . 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% confdence level under the background-only hypothesis. The observed (expected) constraints on the HHH coupling modifer, κλ, are determined to be −6.2 < κλ < 11.6 (−4.5 < κλ < 9.6) at 95% confdence level, assuming the Standard Model for the expected limits and that new physics would only afect κλ.

Article

eng

Vancouver : University of British Columbia Library

10.14288/1.0447116

Science, Faculty of; TRIUMF; Non UBC; Physics and Astronomy, Department of

10.1007/JHEP08(2024)164

Faculty

http://creativecommons.org/licenses/by/4.0/