Measurement of the Bs0→ μμ effective lifetime with the ATLAS detector

Sonia Kabana; Theodota Lagouri; ATLAS Collaboration

doi:10.1007/JHEP09(2023)199

Measurement of the Bs0→ μμ effective lifetime with the ATLAS detector

Translated title of the contribution: Measurement of the Bs0→ μμ effective lifetime with the ATLAS detector

Sonia Kabana
, Theodota Lagouri
, ATLAS Collaboration

Institute of Higher Research

Universidad de Tarapacá

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

This paper reports the first ATLAS measurement of the Bs0→ μμ effective lifetime. The measurement is based on the data collected in 2015–2016, amounting to 26.3 fb−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 Bs0 effective lifetime, with statistical uncertainties extracted through a Neyman construction. The resulting effective measurement of the Bs0→ μμ lifetime is 0.99−0.07+0.42 (stat.) ± 0.17 (syst.) ps and it is found to be consistent with the Standard Model.

Translated title of the contribution	Measurement of the Bs0→ μμ effective lifetime with the ATLAS detector
Original language	English
Article number	199
Pages (from-to)	1-31
Number of pages	32
Journal	Journal of High Energy Physics
Volume	2023
Issue number	9
DOIs	https://doi.org/10.1007/JHEP09(2023)199
State	Published - 28 Sep 2023

Keywords

B Physics
Hadron-Hadron Scattering

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title = "Measurement of the Bs0→ μμ effective lifetime with the ATLAS detector",

abstract = "This paper reports the first ATLAS measurement of the Bs0→ μμ effective lifetime. The measurement is based on the data collected in 2015{\textendash}2016, amounting to 26.3 fb−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 Bs0 effective lifetime, with statistical uncertainties extracted through a Neyman construction. The resulting effective measurement of the Bs0→ μμ lifetime is 0.99−0.07+0.42 (stat.) ± 0.17 (syst.) ps and it is found to be consistent with the Standard Model. ",

keywords = "B Physics, Hadron-Hadron Scattering, B F{\'i}sica, Dispersi{\'o}n hadr{\'o}n-hadr{\'o}n",

author = "Sonia Kabana and Theodota Lagouri and \{ATLAS Collaboration\}",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2023.",

year = "2023",

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doi = "10.1007/JHEP09(2023)199",

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T1 - Measurement of the Bs0→ μμ effective lifetime with the ATLAS detector

AU - Kabana, Sonia

AU - Lagouri, Theodota

AU - ATLAS Collaboration

N1 - Publisher Copyright: © The Author(s) 2023.

PY - 2023/9/28

Y1 - 2023/9/28

N2 - This paper reports the first ATLAS measurement of the Bs0→ μμ effective lifetime. The measurement is based on the data collected in 2015–2016, amounting to 26.3 fb−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 Bs0 effective lifetime, with statistical uncertainties extracted through a Neyman construction. The resulting effective measurement of the Bs0→ μμ lifetime is 0.99−0.07+0.42 (stat.) ± 0.17 (syst.) ps and it is found to be consistent with the Standard Model.

AB - This paper reports the first ATLAS measurement of the Bs0→ μμ effective lifetime. The measurement is based on the data collected in 2015–2016, amounting to 26.3 fb−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 Bs0 effective lifetime, with statistical uncertainties extracted through a Neyman construction. The resulting effective measurement of the Bs0→ μμ lifetime is 0.99−0.07+0.42 (stat.) ± 0.17 (syst.) ps and it is found to be consistent with the Standard Model.

KW - B Physics

KW - Hadron-Hadron Scattering

KW - B Física

KW - Dispersión hadrón-hadrón

UR - https://www.scopus.com/pages/publications/85196292164

UR - https://publons.com/wos-op/publon/63538447/

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DO - 10.1007/JHEP09(2023)199

M3 - Article

SN - 1126-6708

VL - 2023

SP - 1

EP - 31

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 9

M1 - 199

ER -

Measurement of the Bs0→ μμ effective lifetime with the ATLAS detector

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