Measurement of the Bs0→J/ψKS0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {\textrm{B}}_{\textrm{s}}^0\to \textrm{J}/{\uppsi \textrm{K}}_{\textrm{S}}^0 $$\end{document} effective lifetime from proton-proton collisions at s\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \sqrt{s} $$\end{document} = 13 TeV

被引：0

作者：

A. Hayrapetyan ^{[87
]}

A. Tumasyan ^{[90
]}

W. Adam ^{[278
]}

J. W. Andrejkovic ^{[1
]}

T. Bergauer ^{[1
]}

S. Chatterjee ^{[208
]}

K. Damanakis ^{[2
]}

M. Dragicevic ^{[2
]}

P. S. Hussain ^{[2
]}

M. Jeitler ^{[2
]}

N. Krammer ^{[2
]}

A. Li ^{[2
]}

D. Liko ^{[2
]}

I. Mikulec ^{[2
]}

J. Schieck ^{[209
]}

R. Schöfbeck ^{[2
]}

D. Schwarz ^{[2
]}

M. Sonawane ^{[2
]}

W. Waltenberger ^{[2
]}

C.-E. Wulz ^{[2
]}

T. Janssen ^{[209
]}

T. Van Laer ^{[2
]}

P. Van Mechelen ^{[2
]}

N. Breugelmans ^{[2
]}

J. D’Hondt ^{[2
]}

S. Dansana ^{[2
]}

A. De Moor ^{[209
]}

M. Delcourt ^{[3
]}

F. Heyen ^{[3
]}

S. Lowette ^{[3
]}

I. Makarenko ^{[4
]}

D. Müller ^{[4
]}

S. Tavernier ^{[4
]}

M. Tytgat ^{[4
]}

G. P. Van Onsem ^{[4
]}

S. Van Putte ^{[4
]}

D. Vannerom ^{[4
]}

B. Bilin ^{[4
]}

B. Clerbaux ^{[4
]}

A. K. Das ^{[4
]}

G. De Lentdecker ^{[4
]}

H. Evard ^{[6
]}

L. Favart ^{[4
]}

P. Gianneios ^{[4
]}

J. Jaramillo ^{[4
]}

A. Khalilzadeh ^{[5
]}

F. A. Khan ^{[5
]}

K. Lee ^{[5
]}

M. Mahdavikhorrami ^{[5
]}

A. Malara ^{[5
]}

机构：

[1] Yerevan Physics Institute,Universidade Estadual Paulista

[2] Institut für Hochenergiephysik,Institute for Nuclear Research and Nuclear Energy

[3] Universiteit Antwerpen,Instituto De Alta Investigación

[4] Vrije Universiteit Brussel,Department of Physics

[5] Université Libre de Bruxelles,State Key Laboratory of Nuclear Physics and Technology

[6] Ghent University,Guangdong Provincial Key Laboratory of Nuclear Science and Guangdong

[7] Université Catholique de Louvain,Hong Kong Joint Laboratory of Quantum Matter

[8] Centro Brasileiro de Pesquisas Fisicas,Center for High Energy Physics (CHEP

[9] Universidade do Estado do Rio de Janeiro,FU)

[10] Universidade Federal do ABC,Department of Physics

[11] Bulgarian Academy of Sciences,MTA

[12] University of Sofia,ELTE Lendület CMS Particle and Nuclear Physics Group

[13] Universidad de Tarapacá,Faculty of Informatics

[14] Beihang University,College of Engineering and Technology

[15] Tsinghua University,National Centre for Particle Physics

[16] Institute of High Energy Physics,National Centre for Physics

[17] Peking University,Institute of Experimental Physics, Faculty of Physics

[18] South China Normal University,Faculty of Physics

[19] Sun Yat-Sen University,VINCA Institute of Nuclear Sciences

[20] University of Science and Technology of China,Physics Department, Faculty of Science

[21] Nanjing Normal University,Department of Physics

[22] Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) — Fudan University,Department of Physics

[23] Zhejiang University,Department of Physics, Faculty of Science

[24] Universidad de Los Andes,School of Physics and Astronomy

[25] Universidad de Antioquia,Institute of Basic and Applied Sciences, Faculty of Engineering

[26] University of Split,undefined

[27] Faculty of Electrical Engineering,undefined

[28] Mechanical Engineering and Naval Architecture,undefined

[29] University of Split,undefined

[30] Faculty of Science,undefined

[31] Institute Rudjer Boskovic,undefined

[32] University of Cyprus,undefined

[33] Charles University,undefined

[34] Universidad San Francisco de Quito,undefined

[35] Academy of Scientific Research and Technology of the Arab Republic of Egypt,undefined

[36] Egyptian Network of High Energy Physics,undefined

[37] Fayoum University,undefined

[38] National Institute of Chemical Physics and Biophysics,undefined

[39] University of Helsinki,undefined

[40] Helsinki Institute of Physics,undefined

[41] Lappeenranta-Lahti University of Technology,undefined

[42] IRFU,undefined

[43] CEA,undefined

[44] Université Paris-Saclay,undefined

[45] Laboratoire Leprince-Ringuet,undefined

[46] CNRS/IN2P3,undefined

[47] Ecole Polytechnique,undefined

[48] Institut Polytechnique de Paris,undefined

[49] Université de Strasbourg,undefined

[50] CNRS,undefined

来源：

Journal of High Energy Physics | / 2024卷 / 10期

关键词：

B Physics; Hadron-Hadron Scattering; Lifetime;

D O I：

10.1007/JHEP10(2024)247

中图分类号：

学科分类号：

摘要：

The effective lifetime of the Bs0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {\textrm{B}}_{\textrm{s}}^0 $$\end{document} meson in the decay Bs0→J/ψKS0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {\textrm{B}}_{\textrm{s}}^0\to \textrm{J}/{\uppsi \textrm{K}}_{\textrm{S}}^0 $$\end{document} is measured using data collected during 2016–2018 with the CMS detector in s\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \sqrt{s} $$\end{document} = 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\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ {\textrm{B}}_{\textrm{s}}^0 $$\end{document} 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.

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