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 - Journal Article
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 … Total 2897 authors
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
Research Infrastructure: CERN-CZ III - 90240
Institutional support: RVO:68378271
Keywords : pp: colliding beams * Higgs particle: pair production * p p: scattering * gluon gluon: fusion
OECD category: Particles and field physics
Impact factor: 5, year: 2022
Method of publishing: 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]).
Permanent Link: https://hdl.handle.net/11104/0347901