A search for the production of three Higgs bosons (π»β‘π»β‘π») in the πβ’ Β― π β’πβ’ Β― π β’πβ’ Β― π final state is presented. The search uses 126ββfbβ1 of proton-proton collision data at βπ =13ββTeV collected with the ATLAS detector at the Large Hadron Collider. The analysis targets both nonresonant and resonant production of π»β‘π»β‘π». The resonant interpretations primarily consider a cascade decay topology of π βπβ’π» βπ»β‘π»β‘π» with masses of the new scalars π and π up to 1.5 and 1 TeV, respectively. In addition to scenarios where π is off-shell, the nonresonant interpretation includes a search for Standard Model π»β‘π»β‘π» production, with limits on the trilinear and quartic Higgs self-coupling set. No evidence for π»β‘π»β‘π» production is observed. An upper limit of 59 fb is set, at the 95% confidence level, on the cross section for Standard Model π»β‘π»β‘π» production.
Search for triple Higgs boson production in the 6β’π final state using πβ’π collisions at βπ =13ββTeV with the ATLAS detector
Cristoforetti, M.;Di Luca, A.;
2025-01-01
Abstract
A search for the production of three Higgs bosons (π»β‘π»β‘π») in the πβ’ Β― π β’πβ’ Β― π β’πβ’ Β― π final state is presented. The search uses 126ββfbβ1 of proton-proton collision data at βπ =13ββTeV collected with the ATLAS detector at the Large Hadron Collider. The analysis targets both nonresonant and resonant production of π»β‘π»β‘π». The resonant interpretations primarily consider a cascade decay topology of π βπβ’π» βπ»β‘π»β‘π» with masses of the new scalars π and π up to 1.5 and 1 TeV, respectively. In addition to scenarios where π is off-shell, the nonresonant interpretation includes a search for Standard Model π»β‘π»β‘π» production, with limits on the trilinear and quartic Higgs self-coupling set. No evidence for π»β‘π»β‘π» production is observed. An upper limit of 59 fb is set, at the 95% confidence level, on the cross section for Standard Model π»β‘π»β‘π» production.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.