Search for decays of the Higgs boson into scalar particles decaying into four or six b quarks using pp collisions at √s=13 TeV with the ATLAS detector
- NázevTitle
- Search for decays of the Higgs boson into scalar particles decaying into four or six b quarks using pp collisions at √s=13 TeV with the ATLAS detectorSearch for decays of the Higgs boson into scalar particles decaying into four or six b quarks using pp collisions at √s=13 TeV with the ATLAS detector
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- G. Aad, E. Aakvaag, B. Abbott, S. Abdelhameed, B. Ali, K. Augsten, B. Bergmann, P. Fiedler, Z. Hubáček, V. Lysenko, S. Mondal, M. Myška, R. Novotný, V. Petousis, S. Pospíšil, K. Smolek, P. Smolyanskiy, A. Sopczak, V. Vacek, P. Vokáč, O. Zaplatílek
- DOIDOI
- 10.1103/mzld-ldlt
- Časopis / citaceJournal / citation
- Physical Review D. 2025, 112(7), ISSN 2470-0029.
- RokYear
- 2025
- JazykLanguage
- eng
- WoSWoS
- 001644520100001
- ScopusScopus
- 2-s2.0-105026921088
- RIVRIV
- RIV/68407700:21220/25:00388720!RIV26-MSM-21220___
- ProjektProject
- Výzkum základních stavebních kamenů hmoty s využitím špičkových technologiíFundamental constituents of matter through frontier technologies; Institucionální podpora na rozvoj výzkumné org.Institucionální podpora na rozvoj výzkumné org.; CERN-CZ III - Výzkumná infrastruktura pro experimenty v CERN - LM2023040 (2023–2026)CERN-CZ III - Výzkumná infrastruktura pro experimenty v CERN - LM2023040 (2023–2026)
AbstraktAbstract
A search for exotic decays of the Higgs boson H into new scalar or pseudoscalar particles that subsequently decay into b-quarks is presented. The search considers ZH production with several decay scenarios for the Higgs boson; first to a pair of identical scalars, H -> 2a -> 4b, second to a pair of scalars with different masses (m(a1) < m(a2)), either directly, H -> a(1)a(2) -> 4b, or via a longer decay chain, H -> a(1)a(2) -> 3(a1) -> 6b. The analysis uses proton-proton collision data at root s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb(-1). No significant excess above the Standard Model prediction is observed. The search sets upper limits at 95% confidence level on the ratio of the Higgs boson production cross section to the SM prediction times the branching ratio of Higgs bosons decaying into 4b or 6b, between 4% and 25% for sigma(ZH)/sigma(SM) (ZH) x B(H -> 2a -> 4b), between 24% and 38% for sigma(ZH) / sigma(SM) (ZH) x B(H -> a(1) a(2) -> 4b), and between 10% and 20% for sigma(ZH)/sigma(SM)(ZH) x B(H -> a(1)a(2) -> 3(a1) -> 6b), depending on the masses of the scalar particles.
A search for exotic decays of the Higgs boson H into new scalar or pseudoscalar particles that subsequently decay into b-quarks is presented. The search considers ZH production with several decay scenarios for the Higgs boson; first to a pair of identical scalars, H -> 2a -> 4b, second to a pair of scalars with different masses (m(a1) < m(a2)), either directly, H -> a(1)a(2) -> 4b, or via a longer decay chain, H -> a(1)a(2) -> 3(a1) -> 6b. The analysis uses proton-proton collision data at root s = 13 TeV collected with the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb(-1). No significant excess above the Standard Model prediction is observed. The search sets upper limits at 95% confidence level on the ratio of the Higgs boson production cross section to the SM prediction times the branching ratio of Higgs bosons decaying into 4b or 6b, between 4% and 25% for sigma(ZH)/sigma(SM) (ZH) x B(H -> 2a -> 4b), between 24% and 38% for sigma(ZH) / sigma(SM) (ZH) x B(H -> a(1) a(2) -> 4b), and between 10% and 20% for sigma(ZH)/sigma(SM)(ZH) x B(H -> a(1)a(2) -> 3(a1) -> 6b), depending on the masses of the scalar particles.