Search for Higgs boson decays into two new low-mass spin-0 particles in the 4b channel with the ATLAS detector using pp collisions at √s = 13 TeV

Aad, G.; Abbott, B.; Abbott, D.C.; Chudoba, Jiří; Hejbal, Jiří; Hladík, Ondřej; Jačka, Petr; Kepka, Oldřich; Kroll, Jiří; Kupčo, Alexander; Lokajíček, Miloš; Lysák, Roman; Marčišovský, Michal; Mikeštíková, Marcela; Němeček, Stanislav; Penc, Ondřej; Šícho, Petr; Staroba, Pavel; Svatoš, Michal; Taševský, Marek

doi:https://dx.doi.org/10.1103/PhysRevD.102.112006

Number of the records: 1

Search for Higgs boson decays into two new low-mass spin-0 particles in the 4b channel with the ATLAS detector using pp collisions at √s = 13 TeV

1.

SYSNO ASEP	0537887
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Search for Higgs boson decays into two new low-mass spin-0 particles in the 4b channel with the ATLAS detector using pp collisions at √s = 13 TeV
Author(s)	Aad, G. (FR) Abbott, B. (US) Abbott, D.C. (US) Chudoba, Jiří (FZU-D)_{RID, ORCID} Hejbal, Jiří (FZU-D)_{RID, ORCID} Hladík, Ondřej (FZU-D)_ORCID Jačka, Petr (FZU-D)_ORCID Kepka, Oldřich (FZU-D)_{RID, ORCID} Kroll, Jiří (FZU-D)_ORCID Kupčo, Alexander (FZU-D)_{RID, ORCID} Lokajíček, Miloš (FZU-D)_{RID, ORCID} Lysák, Roman (FZU-D)_{RID, ORCID} Marčišovský, Michal (FZU-D)_{RID, ORCID} Mikeštíková, Marcela (FZU-D)_{RID, ORCID} Němeček, Stanislav (FZU-D)_{RID, ORCID} Penc, Ondřej (FZU-D)_ORCID Šícho, Petr (FZU-D)_{RID, ORCID} Staroba, Pavel (FZU-D)_{RID, ORCID} Svatoš, Michal (FZU-D)_{RID, ORCID} Taševský, Marek (FZU-D)_{RID, ORCID}
Number of authors	2897
Article number	112006
Source Title	Physical Review D. - : American Physical Society - ISSN 2470-0010 Roč. 102, č. 11 (2020), s. 1-28
Number of pages	28 s.
Language	eng - English
Country	US - United States
Keywords	ATLAS ; CERN ; LHC ; Higgs particle ; decay modes ; bottom ; multiple production
Subject RIV	BF - Elementary Particles and High Energy Physics
OECD category	Particles and field physics
R&D Projects	LTT17018 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Research Infrastructure	CERN-CZ II - 90104 - Fyzikální ústav AV ČR, v. v. i.
Method of publishing	Open access
Institutional support	FZU-D - RVO:68378271
UT WOS	000596369400003
EID SCOPUS	85097529287
DOI	10.1103/PhysRevD.102.112006
Annotation	This paper describes a search for beyond the Standard Model decays of the Higgs boson into a pair of new spin-0 particles subsequently decaying into bbb-quark pairs, H→aa→(bbˉ)(bbˉ)H ightarrow aa ightarrow (b ar{b})(b ar{b})H→aa→(bbˉ)(bbˉ), using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider at center-of-mass energy s=13sqrt{s}=13s =13 TeV. This search focuses on the regime where the decay products are collimated and in the range 15≤ma≤3015 leq m_a leq 3015≤ma≤30 GeV and is complementary to a previous search in the same final state targeting the regime where the decay products are well separated and in the range 20≤ma≤6020 leq m_a leq 6020≤ma≤60 GeV. A novel strategy for the identification of the a→bbˉa ightarrow b ar{b}a→bbˉ decays is deployed to enhance the efficiency for topologies with small separation angles.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2021
Electronic address	http://hdl.handle.net/11104/0315719

Number of the records: 1