Precision measurement of the B0 meson lifetime using B0→J/ψK∗0 decays with the ATLAS detector

ATLAS Collaboration

doi:10.1140/epjc/s10052-025-14232-8

Precision measurement of the B0 meson lifetime using B0→J/ψK∗0 decays with the ATLAS detector

ATLAS Collaboration

iThemba Laboratory for Accelerator Based Sciences
Department of Physics
University of South Africa
University of Zululand
Cadi Ayyad University
Departamento de Física Teórica y del Cosmos
University of Granada
CERN
Columbia University
Demokritos National Centre for Scientific Research
University of Sheffield
Harvard University
University of Bologna
National Institute for Nuclear Physics
University of Belgrade
University of Siegen
Heidelberg University
Indiana University Bloomington
CAS - Institute of High Energy Physics
University of Science and Technology of China
Shanghai Jiao Tong University
University of Michigan, Ann Arbor
Shandong University
University of Arizona
Nanjing University
Tsinghua University
University of Illinois
SLAC National Accelerator Laboratory
University of California at Santa Cruz
University of Washington
Université Paris-Saclay
Lawrence Berkeley National Laboratory
University College London
The University of Tokyo
CNRS
University of Wisconsin
University of the Witwatersrand
University of Chinese Academy of Sciences
Argonne National Laboratory
University of Hassan II Casablanca
Queen Mary University of London
Comenius University
Brandeis University
University of Wuppertal
Czech Technical University in Prague
University of Freiburg
Millennium Institute for Subatomic physics at high energy frontier (SAPHIR)
Universidad Andrés Bello
University of Geneva
University of Valencia
Cracow
University of Edinburgh
Horia Hulubei National Institute of Physics and Nuclear Engineering
Waseda University
University of Oxford
University of California at Berkeley
United States Department of Energy
University of Göttingen
Southern Methodist University
Hong Kong University of Science and Technology
University of Massachusetts
University of Glasgow
Kobe University
University of Tsukuba
High Energy Accelerator Research Organization, Tsukuba
University of Cape Town
University of Sydney
University of Pennsylvania School of Arts and Sciences
University of Oregon
University of Copenhagen
University of Manchester
Max Planck Institute for Physics (Werner Heisenberg Institute)
Technical University of Munich
Université Savoie Mont Blanc
Radboud University Nijmegen
Sun Yat-Sen University
University of Birmingham
German Electron Synchrotron
Laboratório de Instrumentação e Física Experimental de Partículas
University of Coimbra
University of California at Irvine
University of Amsterdam
Université Grenoble Alpes
Louisiana Tech University
Universidad de Buenos Aires
The University of Chicago
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University of Oklahoma
Rutherford Appleton Laboratory
Osaka University
University of Adelaide
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TU Dortmund University
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University of Bern
Humboldt University of Berlin
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Technische Universität Dresden
Carleton University
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Simon Fraser University
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University of Pisa
University of Salento
University of Toronto
The California State University
Oklahoma State University
University of Victoria BC
Tel Aviv University
University of Rome Tor Vergata
Stockholm University
Oskar Klein Centre
Istinye University
University of Montreal
Tokyo Institute of Technology
Pontificia Universidad Católica de Chile
Slovak Academy of Sciences
Universidad de La Serena
Aristotle University of Thessaloniki
Center for Interdisciplinary Research and Innovation (CIRI-AUTH)
Mongolian Academy of Sciences
Ankara University
University of Genoa
Department of Physics
Stony Brook University
Ochanomizu University
Kyoto University
Georgian National Academy of Sciences
Hellenic Open University
Sorbonne Université
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Stanford University
Nagoya University
Kyushu University
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Institute of Particle Physics
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Universidad Autónoma de Madrid
York University Toronto
University of Melbourne
Mohammed V University in Rabat
Mohammed VI Polytechnic University
University of Calabria
Czech Academy of Sciences
Technion-Israel Institute of Technology
Michigan State University
University of British Columbia
University of Hamburg
University of Sussex
Uppsala University
TOBB University of Economics and Technology
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University of Bergen
KTH Royal Institute of Technology
Justus Liebig University Giessen
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Ohio State University
Washington College
University of Oslo
Bulgarian Academy of Sciences
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University of Lisbon
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Mohamed I University
INFN-TIFPA
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AGH University of Science and Technology
Palacký University Olomouc
University of Warwick
Alexandru Ioan Cuza University of Iaşi
National Institute for Research and Development of Isotopic and Molecular Technologies
Transilvania University of Brasov
University of Alberta
National Technical University of Athens
University of Colorado Boulder
Universidade do Estado do Rio de Janeiro
Tufts University
Chinese University of Hong Kong
Bogazici University
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IMB-CNM. CSIC
Peking University
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Iowa State University
National and Kapodistrian University of Athens
Shinshu University
Universidad de Tarapacá
Ilia State University
University of Texas at Dallas
Yeditepe University
Azerbaijan National Academy of Sciences
Azerbaijan State University of Economics
University Politehnica of Bucharest
Ibn Tofail University
West University of Timisoara
The University of Georgia, Tbilisi
Enrico Fermi Center
University of the Aegean
National Institute of Physics, College of Science, University of the Philippines, Diliman
City University of New York
Abdus Salam International Centre for Theoretical Physics
University of Bucharest
University of Naples Parthenope
Sofia University
The Collaborative Innovation Center of Quantum Matter (CICQM)
Autonomous University of Barcelona
Westmont College
Gaziantep University
University of Fribourg
An-Najah National University
University of Thessaly
Zhengzhou University
Istanbul University
King's College London

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

1 Citation (Scopus)

Abstract

A measurement of the B0 meson lifetime using B0→J/ψK∗0 decays in data from 13 TeV proton–proton collisions with an integrated luminosity of 140fb-1 recorded by the ATLAS detector at the LHC is presented. The measured effective lifetime is (Formula presented.) The average decay width extracted from the effective lifetime, using parameters from external sources, is (Formula presented.) where the uncertainties are statistical, systematic and from external sources. The earlier ATLAS measurement of Γs in the Bs0→J/ψϕ decay was used to derive a value for the ratio of the average decay widths Γd and Γs for B0 and Bs0 mesons respectively, of (Formula presented.) The measured lifetime, average decay width and decay width ratio are in agreement with theoretical predictions and with measurements by other experiments. This measurement provides the most precise result of the effective lifetime of the B0 meson to date.

Original language	English
Article number	736
Journal	European Physical Journal C
Volume	85
Issue number	7
DOIs	https://doi.org/10.1140/epjc/s10052-025-14232-8
Publication status	Published - Jul 2025

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

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10.1140/epjc/s10052-025-14232-8

Cite this

@article{b998f174784941299ac82e4f82518270,

title = "Precision measurement of the B0 meson lifetime using B0→J/ψK∗0 decays with the ATLAS detector",

abstract = "A measurement of the B0 meson lifetime using B0→J/ψK∗0 decays in data from 13 TeV proton–proton collisions with an integrated luminosity of 140fb-1 recorded by the ATLAS detector at the LHC is presented. The measured effective lifetime is (Formula presented.) The average decay width extracted from the effective lifetime, using parameters from external sources, is (Formula presented.) where the uncertainties are statistical, systematic and from external sources. The earlier ATLAS measurement of Γs in the Bs0→J/ψϕ decay was used to derive a value for the ratio of the average decay widths Γd and Γs for B0 and Bs0 mesons respectively, of (Formula presented.) The measured lifetime, average decay width and decay width ratio are in agreement with theoretical predictions and with measurements by other experiments. This measurement provides the most precise result of the effective lifetime of the B0 meson to date.",

author = "ATLAS Collaboration and L. Zwalinski and W. Zou and O. Zormpa and Zorbas, \{T. G.\} and K. Zoch and A. Zoccoli and L. {\v Z}ivkovi{\'c} and M. Ziolkowski and J. Zinsser and Zimine, \{N. I.\} and K. Zhukov and X. Zhuang and Y. Zhu and Y. Zhu and X. Zhu and J. Zhu and Zhu, \{C. G.\} and Y. Zhou and Y. Zhou and Y. Zhou and N. Zhou and H. Zhou and B. Zhou and D. Zhong and Z. Zheng and X. Zheng and K. Zheng and J. Zheng and A. Zhemchugov and Z. Zhao and Z. Zhao and Y. Zhao and T. Zhao and H. Zhao and Z. Zhang and Z. Zhang and Z. Zhang and Y. Zhang and Y. Zhang and Y. Zhang and X. Zhang and X. Zhang and T. Zhang and S. Zhang and S. Zhang and R. Zhang and L. Truong and N. Govender and Gololo, \{M. G.D.\} and Connell, \{S. H.\}",

note = "Publisher Copyright: {\textcopyright} CERN for the benefit of the ATLAS Collaboration 2025.",

year = "2025",

month = jul,

doi = "10.1140/epjc/s10052-025-14232-8",

language = "English",

volume = "85",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "7",

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TY - JOUR

T1 - Precision measurement of the B0 meson lifetime using B0→J/ψK∗0 decays with the ATLAS detector

AU - ATLAS Collaboration

AU - Zwalinski, L.

AU - Zou, W.

AU - Zormpa, O.

AU - Zorbas, T. G.

AU - Zoch, K.

AU - Zoccoli, A.

AU - Živković, L.

AU - Ziolkowski, M.

AU - Zinsser, J.

AU - Zimine, N. I.

AU - Zhukov, K.

AU - Zhuang, X.

AU - Zhu, Y.

AU - Zhu, X.

AU - Zhu, J.

AU - Zhu, C. G.

AU - Zhou, Y.

AU - Zhou, N.

AU - Zhou, H.

AU - Zhou, B.

AU - Zhong, D.

AU - Zheng, Z.

AU - Zheng, X.

AU - Zheng, K.

AU - Zheng, J.

AU - Zhemchugov, A.

AU - Zhao, Z.

AU - Zhao, Y.

AU - Zhao, T.

AU - Zhao, H.

AU - Zhang, Z.

AU - Zhang, Y.

AU - Zhang, X.

AU - Zhang, T.

AU - Zhang, S.

AU - Zhang, R.

AU - Truong, L.

AU - Govender, N.

AU - Gololo, M. G.D.

AU - Connell, S. H.

PY - 2025/7

Y1 - 2025/7

N2 - A measurement of the B0 meson lifetime using B0→J/ψK∗0 decays in data from 13 TeV proton–proton collisions with an integrated luminosity of 140fb-1 recorded by the ATLAS detector at the LHC is presented. The measured effective lifetime is (Formula presented.) The average decay width extracted from the effective lifetime, using parameters from external sources, is (Formula presented.) where the uncertainties are statistical, systematic and from external sources. The earlier ATLAS measurement of Γs in the Bs0→J/ψϕ decay was used to derive a value for the ratio of the average decay widths Γd and Γs for B0 and Bs0 mesons respectively, of (Formula presented.) The measured lifetime, average decay width and decay width ratio are in agreement with theoretical predictions and with measurements by other experiments. This measurement provides the most precise result of the effective lifetime of the B0 meson to date.

AB - A measurement of the B0 meson lifetime using B0→J/ψK∗0 decays in data from 13 TeV proton–proton collisions with an integrated luminosity of 140fb-1 recorded by the ATLAS detector at the LHC is presented. The measured effective lifetime is (Formula presented.) The average decay width extracted from the effective lifetime, using parameters from external sources, is (Formula presented.) where the uncertainties are statistical, systematic and from external sources. The earlier ATLAS measurement of Γs in the Bs0→J/ψϕ decay was used to derive a value for the ratio of the average decay widths Γd and Γs for B0 and Bs0 mesons respectively, of (Formula presented.) The measured lifetime, average decay width and decay width ratio are in agreement with theoretical predictions and with measurements by other experiments. This measurement provides the most precise result of the effective lifetime of the B0 meson to date.

UR - https://www.scopus.com/pages/publications/105012447680

U2 - 10.1140/epjc/s10052-025-14232-8

DO - 10.1140/epjc/s10052-025-14232-8

M3 - Article

AN - SCOPUS:105012447680

SN - 1434-6044

VL - 85

JO - European Physical Journal C

JF - European Physical Journal C

IS - 7

M1 - 736

ER -

Precision measurement of the B0 meson lifetime using B0→J/ψK∗0 decays with the ATLAS detector

Abstract

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