Measurement of the B.sup.0./sup..sub.S./sub. → μμ effective lifetime with the ATLAS detector

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

doi:https://dx.doi.org/10.1007/JHEP09(2023)199

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Measurement of the B.sup.0./sup..sub.S./sub. → μμ effective lifetime with the ATLAS detector

1.

SYSNO ASEP	0576719
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Measurement of the B⁰_S → μμ effective lifetime with the ATLAS detector
Author(s)	Aad, G. (FR) Abbott, B. (US) Abeling, K. (DE) Chudoba, Jiří (FZU-D)_{RID, ORCID} Federičová, Pavla (FZU-D)_ORCID Hejbal, Jiří (FZU-D)_{RID, ORCID} Jačka, Petr (FZU-D)_ORCID Kepka, Oldřich (FZU-D)_{RID, ORCID} Kroll, Jiří (FZU-D)_ORCID Kupčo, Alexander (FZU-D)_{RID, ORCID} Latoňová, Věra (FZU-D)_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} 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	2983
Article number	199
Source Title	Journal of High Energy Physics. - : Springer - ISSN 1029-8479 Roč. 2023, č. 9 (2023)
Number of pages	31 s.
Language	eng - English
Country	DE - Germany
Keywords	ATLAS ; B⁰_S:lifetime ; decay: time ; CERN LHC Coll
Subject RIV	BF - Elementary Particles and High Energy Physics
OECD category	Particles and field physics
Research Infrastructure	CERN-CZ III - 90240 - Fyzikální ústav AV ČR, v. v. i.
Method of publishing	Open access
Institutional support	FZU-D - RVO:68378271
UT WOS	001091238200001
DOI	10.1007/JHEP09(2023)199
Annotation	This paper reports the first ATLAS measurement of the Bs0Bs0→ μμ effective lifetime. The measurement is based on the data collected in 2015–2016, amounting to 26.3 fb−1−1 of 13 TeV LHC proton-proton collisions. The proper decay-time distribution of 58 ± 13 background-subtracted signal candidates is fit with simulated signal templates parameterised as a function of the Bs0Bs0 effective lifetime, with statistical uncertainties extracted through a Neyman construction. The resulting effective measurement of the Bs0Bs0→ μμ lifetime is 0.99−0.07+0.420.99−0.07+0.42 (stat.) ± 0.17 (syst.) ps and it is found to be consistent with the Standard Model.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2024
Electronic address	https://hdl.handle.net/11104/0346152

Number of the records: 1