Search for nonresonant pair production of Higgs bosons in the bb¯bb¯ final state in pp collisions at √s=13 TeV with the ATLAS detector

0579025 - FZÚ 2024 RIV US eng J - Článek v odborném periodiku
Aad, G. - Abbott, B. - Abeling, K. - Chudoba, Jiří - Federičová, Pavla - Hejbal, Jiří - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … celkem 2897 autorů
Search for nonresonant pair production of Higgs bosons in the bb¯bb¯ final state in pp collisions at √s=13 TeV with the ATLAS detector.
Physical Review D. Roč. 108, č. 5 (2023), č. článku 052003. ISSN 2470-0010. E-ISSN 2470-0029
Výzkumná infrastruktura: CERN-CZ III - 90240
Institucionální podpora: RVO:68378271
Klíčová slova: pp: colliding beams * Higgs particle: pair production * p p: scattering * gluon gluon: fusion
Obor OECD: Particles and field physics
Impakt faktor: 5, rok: 2022
Způsob publikování: Open access

A search for nonresonant Higgs boson pair production in the bb¯bb¯ final state is presented. The analysis uses 126  fb-1 of pp collision data at s=13  TeV collected with the ATLAS detector at the Large Hadron Collider, and targets both the gluon-gluon fusion and vector-boson fusion production modes. No evidence of the signal is found and the observed (expected) upper limit on the cross section for nonresonant Higgs boson pair production is determined to be 5.4 (8.1) times the Standard Model predicted cross section at 95% confidence level. Constraints are placed on modifiers to the HHH and HHVV couplings. The observed (expected) 2σ constraints on the HHH coupling modifier, κλ, are determined to be [-3.5,11.3] ([-5.4,11.4]), while the corresponding constraints for the HHVV coupling modifier, κ2V, are [-0.0,2.1] ([-0.1,2.1]).
Trvalý link: https://hdl.handle.net/11104/0347901