Measurement of the Bs0→J/ψKS0 effective lifetime from proton-proton collisions at s = 13 TeV

The CMS collaboration; Nordin Breugelmans; Jorgen D'Hondt

doi:10.1007/JHEP10(2024)247

Measurement of the Bs0→J/ψKS0 effective lifetime from proton-proton collisions at s = 13 TeV

The CMS collaboration, Nordin Breugelmans, Jorgen D'Hondt

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Abstract

The effective lifetime of the B_s⁰ meson in the decay B_s⁰→J/ψK_S⁰ is measured using data collected during 2016–2018 with the CMS detector in s = 13 TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 140 fb⁻¹. The effective lifetime is determined by performing a two-dimensional unbinned maximum likelihood fit to the B_s⁰ meson invariant mass and proper decay time distributions. The resulting value of 1.59 ± 0.07(stat) ± 0.03(syst) ps is the most precise measurement to date and is in good agreement with the expected value.

Original language	English
Article number	247
Pages (from-to)	1-40
Number of pages	40
Journal	Journal of High Energy Physics
Volume	2024
Issue number	10
DOIs	https://doi.org/10.1007/JHEP10(2024)247
Publication status	Published - 31 Oct 2024

Bibliographical note

Publisher Copyright:
© The Author(s) 2024.

Keywords

B Physics
Hadron-Hadron Scattering
Lifetime

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10.1007/JHEP10(2024)247Licence: CC BY

JHEP10(2024)247Final published version, 1.39 MBLicence: CC BY

Cite this

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title = "Measurement of the Bs0→J/ψKS0 effective lifetime from proton-proton collisions at s = 13 TeV",

abstract = "The effective lifetime of the Bs0 meson in the decay Bs0→J/ψKS0 is measured using data collected during 2016–2018 with the CMS detector in s = 13 TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 140 fb−1. The effective lifetime is determined by performing a two-dimensional unbinned maximum likelihood fit to the Bs0 meson invariant mass and proper decay time distributions. The resulting value of 1.59 ± 0.07(stat) ± 0.03(syst) ps is the most precise measurement to date and is in good agreement with the expected value.",

keywords = "B Physics, Hadron-Hadron Scattering, Lifetime",

author = "{The CMS collaboration} and Nordin Breugelmans and Jorgen D'Hondt and S. Dansana and {De Moor}, A. and M. Delcourt and F. Heyen and S. Lowette and I. Makarenko and D. M{\"u}ller and S. Tavernier and M. Tytgat and {Van Onsem}, {G. P.} and {Van Putte}, S. and D. Vannerom",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = oct,

day = "31",

doi = "10.1007/JHEP10(2024)247",

language = "English",

volume = "2024",

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journal = "The Journal of high energy physics",

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T1 - Measurement of the Bs0→J/ψKS0 effective lifetime from proton-proton collisions at s = 13 TeV

AU - The CMS collaboration

AU - Breugelmans, Nordin

AU - D'Hondt, Jorgen

AU - Dansana, S.

AU - De Moor, A.

AU - Delcourt, M.

AU - Heyen, F.

AU - Lowette, S.

AU - Makarenko, I.

AU - Müller, D.

AU - Tavernier, S.

AU - Tytgat, M.

AU - Van Onsem, G. P.

AU - Van Putte, S.

AU - Vannerom, D.

PY - 2024/10/31

Y1 - 2024/10/31

N2 - The effective lifetime of the Bs0 meson in the decay Bs0→J/ψKS0 is measured using data collected during 2016–2018 with the CMS detector in s = 13 TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 140 fb−1. The effective lifetime is determined by performing a two-dimensional unbinned maximum likelihood fit to the Bs0 meson invariant mass and proper decay time distributions. The resulting value of 1.59 ± 0.07(stat) ± 0.03(syst) ps is the most precise measurement to date and is in good agreement with the expected value.

AB - The effective lifetime of the Bs0 meson in the decay Bs0→J/ψKS0 is measured using data collected during 2016–2018 with the CMS detector in s = 13 TeV proton-proton collisions at the LHC, corresponding to an integrated luminosity of 140 fb−1. The effective lifetime is determined by performing a two-dimensional unbinned maximum likelihood fit to the Bs0 meson invariant mass and proper decay time distributions. The resulting value of 1.59 ± 0.07(stat) ± 0.03(syst) ps is the most precise measurement to date and is in good agreement with the expected value.

KW - B Physics

KW - Hadron-Hadron Scattering

KW - Lifetime

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U2 - 10.1007/JHEP10(2024)247

DO - 10.1007/JHEP10(2024)247

M3 - Article

AN - SCOPUS:85209221144

VL - 2024

SP - 1

EP - 40

JO - The Journal of high energy physics

JF - The Journal of high energy physics

SN - 1126-6708

IS - 10

M1 - 247

ER -

Measurement of the Bs0→J/ψKS0 effective lifetime from proton-proton collisions at s = 13 TeV

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

EU674: iSAS: Innovate for Sustainable Accelerating Systems

FWOAL1078: Probing the Charm-Higgs Yukawa at the LHC.

FWOIRI13: The CMS experiment at the CERN Large Hadron Collider

Cite this

Measurement of the Bs0→J/ψKS0 effective lifetime from proton-proton collisions at s = 13 TeV

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Projects

EU674: iSAS: Innovate for Sustainable Accelerating Systems

FWOAL1078: Probing the Charm-Higgs Yukawa at the LHC.

FWOIRI13: The CMS experiment at the CERN Large Hadron Collider

Cite this