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

作     者：Aad, G. Aakvaag, E. Abbott, B. Abdelhameed, S. Abeling, K. Abicht, N.J. Abidi, S.H. Aboelela, M. Aboulhorma, A. Abramowicz, H. Abreu, H. Abulaiti, Y. Acharya, B.S. Ackermann, A. Bourdarios, C. Adam Adamczyk, L. Addepalli, S.V. Addison, M.J. Adelman, J. Adiguzel, A. Adye, T. Affolder, A.A. Afik, Y. Agaras, M.N. Agarwala, J. Aggarwal, A. Agheorghiesei, C. Ahmadov, F. Ahmed, W.S. Ahuja, S. Ai, X. Aielli, G. Aikot, A. Tamlihat, M. Ait Aitbenchikh, B. Akbiyik, M. Åkesson, T.P.A. Akimov, A.V. Akiyama, D. Akolkar, N.N. Aktas, S. Khoury, K. Al Alberghi, G.L. Albert, J. Albicocco, P. Albouy, G.L. Alderweireldt, S. Alegria, Z.L. Aleksa, M. Aleksandrov, I.N. Alexa, C. Alexopoulos, T. Alfonsi, F. Algren, M. Alhroob, M. Ali, B. Ali, H.M.J. Ali, S. Alibocus, S.W. Aliev, M. Alimonti, G. Alkakhi, W. Allaire, C. Allbrooke, B.M.M. Allen, J.F. Flores, C.A. Allendes Allport, P.P. Aloisio, A. Alonso, F. Alpigiani, C. Alsolami, Z.M.K. Estevez, M. Alvarez Fernandez, A. Alvarez Cardoso, M. Alves Alviggi, M.G. Aly, M. Coutinho, Y. Amaral Ambler, A. Amelung, C. Amerl, M. Ames, C.G. Amidei, D. Amini, B. Amirie, K.J. Dos Santos, S.P. Amor Amos, K.R. Amperiadou, D. An, S. Ananiev, V. Anastopoulos, C. Andeen, T. Anders, J.K. Anderson, A.C. Andrean, S.Y. Andreazza, A. Angelidakis, S. Angerami, A. Anisenkov, A.V. Annovi, A. Antel, C. Antipov, E. Antonelli, M. Anulli, F. Aoki, M. Aoki, T. Aparo, M.A. Bella, L. Aperio Appelt, C. Apyan, A. Val, S.J. Arbiol Arcangeletti, C. Arce, A.T.H. Arguin, J.-F. Argyropoulos, S. Arling, J.-H. Arnaez, O. Arnold, H. Artoni, G. Asada, H. Asai, K. Asai, S. Asbah, N.A. Pickering, R.A. Ashby Assamagan, K. Astalos, R. Astrand, K.S.V. Atashi, S. Atkin, R.J. Atkinson, M. Atmani, H. Atmasiddha, P.A. Augsten, K. Auricchio, S. Auriol, A.D. Austrup, V.A. Avolio, G. Axiotis, K. Azuelos, G. Babal, D. Bachacou, H. Bachas, K. Bachiu, A. Backman, F. Badea, A. Baer, T.M. Bagnaia, P. Bahmani, M. Bahner, D. Bai, K. Baines, J.T. Baines, L. 

作者机构：Department of Physics University of Adelaide Adelaide Australia Department of Physics University of Alberta EdmontonAB Canada Department of Physics Ankara University Ankara Turkey Division of Physics TOBB University of Economics and Technology Ankara Turkey LAPP Université Savoie Mont Blanc CNRS/IN2P3 Annecy France APC Université Paris Cité CNRS/IN2P3 Paris France High Energy Physics Division Argonne National Laboratory ArgonneIL United States Department of Physics University of Arizona TucsonAZ United States Department of Physics University of Texas at Arlington ArlingtonTX United States Physics Department National and Kapodistrian University of Athens Athens Greece Physics Department National Technical University of Athens Zografou Greece Department of Physics University of Texas at Austin AustinTX United States Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan  Barcelona Institute of Science and Technology Barcelona Spain Institute of High Energy Physics Chinese Academy of Sciences Beijing China Physics Department Tsinghua University Beijing China Institute of Physics University of Belgrade Belgrade Serbia Department for Physics and Technology University of Bergen Bergen Norway Physics Division Lawrence Berkeley National Laboratory BerkeleyCA United States University of California BerkeleyCA United States Institut für Physik Humboldt Universität zu Berlin Berlin Germany Albert Einstein Center for Fundamental Physics Laboratory for High Energy Physics University of Bern Bern Switzerland School of Physics and Astronomy University of Birmingham Birmingham United Kingdom Department of Physics Bogazici University Istanbul Turkey Department of Physics Engineering Gaziantep University Gaziantep Turkey Department of Physics Istanbul University Istanbul Turkey Facultad de Ciencias y Centro de Investigaciónes Universidad Antonio Nariño Bogotá Colombia Departamento de Física Universidad Nacional de Colombia Bogotá Colombia Dipartimento di Fisica e Astronomia A. Righi Università di Bologna Bologna Italy INFN Sezione di Bologna Italy Physikalisches Institut Universität Bonn Bonn Germany Department of Physics Boston University BostonMA United States Department of Physics Brandeis University WalthamMA United States Transilvania University of Brasov Brasov Romania Horia Hulubei National Institute of Physics and Nuclear Engineering Bucharest Romania Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania National Institute for Research and Development of Isotopic and Molecular Technologies Physics Department Cluj-Napoca Romania National University of Science and Technology Politechnica Bucharest Romania West University in Timisoara Timisoara Romania Faculty of Physics University of Bucharest Bucharest Romania Faculty of Mathematics Physics and Informatics Comenius University Bratislava Slovakia Department of Subnuclear Physics Institute of Experimental Physics The Slovak Academy of Sciences Kosice Slovakia Physics Department Brookhaven National Laboratory UptonNY United States  Buenos Aires Argentina California State University CA United States Cavendish Laboratory University of Cambridge Cambridge United Kingdom Department of Physics University of Cape Town Cape Town South Africa Department of Mechanical Engineering Science University of Johannesburg Johannesburg South Africa zNational Institute of Physics University of the Philippines Diliman Philippines School of Physics University of the Witwatersrand Johannesburg South Africa Department of Physics Carleton University OttawaON Canada Faculté des Sciences Ain Chock Université Hassan II de Casablanca Morocco Morocco Faculté des Sciences Université Ibn-Tofail Kénitra Morocco LPMR Faculté des Sciences Université Mohamed Premier Oujda Morocco Faculté des sciences Université Mohammed V Rabat Morocco Institute of Applied Physics Mohammed VI Polytechnic University Ben Guerir Morocco CERN Geneva Switzerland CERN Switzerland CERN Switzerland Enrico Fermi Institute University of Chicago ChicagoIL United States LPC Université Clermont Auvergne CNRS/IN2P3 Clermont-Ferrand France Nevis Laboratory Columbia University IrvingtonNY United States Niels Bohr Institute University of Copenhagen Copenhagen Denmark Dipartimento di Fisica Università della Calabria Rende Italy INFN Gruppo Collegato di Cosenza Laboratori Nazionali di Frascati Italy Physics Department Southern Methodist University DallasTX United States Physics Department University of Texas at Dallas RichardsonTX United States National Centre for Scientific Research "Demokritos" Agia Paraskevi Greece Department of Physics Stockholm University Sweden Oskar Klein Centre Stockholm Sweden Deutsches Elektronen-Synchrotron DESY Hamburg Germany Deutsches Elektronen-Synchrotron DESY Zeuthen Germany Fakultät Physik Technische Universität Dortmund Dortmund Germany Institut für Kern- und Teilchenphysik Technische Universität Dresden Dresden Germany Department of Physics Duke University DurhamNC United States SUPA - School of Physics and Astronomy University of Edinburgh Edinburgh United Kingdom INFN e Laboratori Nazionali di Frascati Frascati Italy Physikalisches Institut Albert-Ludwigs-Universität Freiburg Freiburg Germany II. Physikalisches Institut Georg-August-Universität Göttingen Göttingen Germany 

出 版 物：《arXiv》 (arXiv)

年 卷 期：2024年

核心收录：

主　　题：Bosons 

摘      要：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 140 fb−1 recorded by the ATLAS detector at the LHC is presented. The measured effective lifetime is τ = 1.5053 ± 0.0012 (stat.) ± 0.0035 (syst.) ps. The average decay width extracted from the effective lifetime, using parameters from external sources, is Γd = 0.6639 ± 0.0005 (stat.) ± 0.0016 (syst.) ± 0.0038 (ext.) ps−1, where the uncertainties are statistical, systematic and from external sources. The earlier ATLAS measurement of Γs in the B0s → J/ψ decay was used to derive a value for the ratio of the average decay widths Γd and Γs for B0 and B0s mesons respectively, of Γd/ Γ s = 0.9905 ± 0.0022 (stat.) ± 0.0036 (syst.) ± 0.0057 (ext.). 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. © 2024, CC BY.