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Measurement of theB_(s)⁰ → μμEffective Lifetime with the ATLAS Detector
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Measurement of theB_(s)⁰ → μμEffective Lifetime with the ATLAS Detector

Georges Aad, Braden Keim Abbott, Kira Abeling, Nils Julius Abicht, Haider Abidi, Asmaa Aboulhorma, Halina Abramowicz, Henso Abreu, Yiming Abulaiti, Bobby Samir Acharya, …
JHEP, 卷.9(9)
28/09/2023
Web of Science ID: WOS:001091238200001

摘要

High Energy Physics - Experiment Physics
This paper reports the first ATLAS measurement of theB_(s)⁰ → μμeffective lifetime. The measurement is based on the data collected in 2015-2016, amounting to 26.3 fb ⁻¹of 13 TeV LHC proton-proton collisions. The proper decay-time distribution of58±13background-subtracted signal candidates is fit with simulated signal templates parameterised as a function of theB_(s)⁰effective lifetime, with statistical uncertainties extracted through a Neyman construction. The resulting effective measurement of theB_(s)⁰ → μμlifetime is0.99^(+0.42)_(-0.07) (\text{stat.}{)}{±} 0.17 \text{ (syst.)}{ }{\mathrm{ps}{}{a}}nd it is found to be consistent with the Standard Model.

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https://doi.org/10.1007/JHEP09(2023)199檢視
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引用書目主題
5 Physics
5.9 Particles & Fields
5.9.19 Beyond Standard Model
Web Of Science研究領域
Physics, Particles & Fields
ESI研究領域
Physics

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