A search for the production of three Higgs bosons (𝐻⁑𝐻⁑𝐻) in the 𝑏⁒ Β― 𝑏 ⁒𝑏⁒ Β― 𝑏 ⁒𝑏⁒ Β― 𝑏 final state is presented. The search uses 126  fbβˆ’1 of proton-proton collision data at βˆšπ‘  =13  TeV collected with the ATLAS detector at the Large Hadron Collider. The analysis targets both nonresonant and resonant production of 𝐻⁑𝐻⁑𝐻. The resonant interpretations primarily consider a cascade decay topology of 𝑋 →𝑆⁒𝐻 →𝐻⁑𝐻⁑𝐻 with masses of the new scalars 𝑋 and 𝑆 up to 1.5 and 1 TeV, respectively. In addition to scenarios where 𝑆 is off-shell, the nonresonant interpretation includes a search for Standard Model 𝐻⁑𝐻⁑𝐻 production, with limits on the trilinear and quartic Higgs self-coupling set. No evidence for 𝐻⁑𝐻⁑𝐻 production is observed. An upper limit of 59 fb is set, at the 95% confidence level, on the cross section for Standard Model 𝐻⁑𝐻⁑𝐻 production.

Search for triple Higgs boson production in the 6⁒𝑏 final state using 𝑝⁒𝑝 collisions at βˆšπ‘  =13  TeV with the ATLAS detector

Cristoforetti, M.;Di Luca, A.;
2025-01-01

Abstract

A search for the production of three Higgs bosons (𝐻⁑𝐻⁑𝐻) in the 𝑏⁒ Β― 𝑏 ⁒𝑏⁒ Β― 𝑏 ⁒𝑏⁒ Β― 𝑏 final state is presented. The search uses 126  fbβˆ’1 of proton-proton collision data at βˆšπ‘  =13  TeV collected with the ATLAS detector at the Large Hadron Collider. The analysis targets both nonresonant and resonant production of 𝐻⁑𝐻⁑𝐻. The resonant interpretations primarily consider a cascade decay topology of 𝑋 →𝑆⁒𝐻 →𝐻⁑𝐻⁑𝐻 with masses of the new scalars 𝑋 and 𝑆 up to 1.5 and 1 TeV, respectively. In addition to scenarios where 𝑆 is off-shell, the nonresonant interpretation includes a search for Standard Model 𝐻⁑𝐻⁑𝐻 production, with limits on the trilinear and quartic Higgs self-coupling set. No evidence for 𝐻⁑𝐻⁑𝐻 production is observed. An upper limit of 59 fb is set, at the 95% confidence level, on the cross section for Standard Model 𝐻⁑𝐻⁑𝐻 production.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11582/358511
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