https://doi.org/10.1140/epjc/s10052-023-11634-4
Regular Article - Experimental Physics
Measurement of 
using the 
decay mode
1
Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
2
Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
3
Center for High Energy Physics, Tsinghua University, Beijing, China
4
Institute of High Energy Physics (IHEP), Beijing, China
5
School of Physics State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, China
6
University of Chinese Academy of Sciences, Beijing, China
7
Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China
8
Université Savoie Mont Blanc, CNRS, IN2P3-LAPP, Annecy, France
9
Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
10
Aix Marseille Univ, CNRS/IN2P3, CPPM, Marseille, France
11
Université Paris-Saclay, CNRS/IN2P3, IJCLab, Orsay, France
12
Laboratoire Leprince-Ringuet, CNRS/IN2P3, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France
13
LPNHE, Sorbonne Université, Paris Diderot Sorbonne Paris Cité, CNRS/IN2P3, Paris, France
14
I. Physikalisches Institut, RWTH Aachen University, Aachen, Germany
15
Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
16
Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
17
Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
18
School of Physics, University College Dublin, Dublin, Ireland
19
INFN Sezione di Bari, Bari, Italy
20
INFN Sezione di Bologna, Bologna, Italy
21
INFN Sezione di Ferrara, Ferrara, Italy
22
INFN Sezione di Firenze, Florence, Italy
23
INFN Laboratori Nazionali di Frascati, Frascati, Italy
24
INFN Sezione di Genova, Genoa, Italy
25
INFN Sezione di Milano, Milan, Italy
26
INFN Sezione di Milano-Bicocca, Milan, Italy
27
INFN Sezione di Cagliari, Monserrato, Italy
28
Università degli Studi di Padova, Università e INFN, Padua, Italy
29
INFN Sezione di Pisa, Pisa, Italy
30
INFN Sezione di Roma La Sapienza, Rome, Italy
31
INFN Sezione di Roma Tor Vergata, Rome, Italy
32
Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
33
Nikhef National Institute for Subatomic Physics and VU University Amsterdam, Amsterdam, The Netherlands
34
Faculty of Physics and Applied Computer Science, AGH-University of Science and Technology, Kraków, Poland
35
Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Kraków, Poland
36
National Center for Nuclear Research (NCBJ), Warsaw, Poland
37
Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
38
Institute covered by a cooperation agreement with CERN, Geneva, Switzerland
39
ICCUB, Universitat de Barcelona, Barcelona, Spain
40
Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
41
Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia-CSIC, Valencia, Spain
42
European Organization for Nuclear Research (CERN), Geneva, Switzerland
43
Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
44
Physik-Institut, Universität Zürich, Zürich, Switzerland
45
NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
46
Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
47
University of Birmingham, Birmingham, UK
48
H.H. Wills Physics Laboratory, University of Bristol, Bristol, UK
49
Cavendish Laboratory, University of Cambridge, Cambridge, UK
50
Department of Physics, University of Warwick, Coventry, UK
51
STFC Rutherford Appleton Laboratory, Didcot, UK
52
School of Physics and Astronomy, University of Edinburgh, Edinburgh, UK
53
School of Physics and Astronomy, University of Glasgow, Glasgow, UK
54
Oliver Lodge Laboratory, University of Liverpool, Liverpool, UK
55
Imperial College London, London, UK
56
Department of Physics and Astronomy, University of Manchester, Manchester, UK
57
Department of Physics, University of Oxford, Oxford, UK
58
Massachusetts Institute of Technology, Cambridge, MA, USA
59
University of Cincinnati, Cincinnati, OH, USA
60
University of Maryland, College Park, MD, USA
61
Los Alamos National Laboratory (LANL), Los Alamos, NM, USA
62
Syracuse University, Syracuse, NY, USA
63
School of Physics and Astronomy, Monash University, Melbourne, Australia
64
Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
65
Physics and Micro Electronic College, Hunan University, Changsha, China
66
Guangdong Provincial Key Laboratory of Nuclear Science, Guangdong-Hong Kong Joint Laboratory of Quantum Matter, Institute of Quantum Matter, South China Normal University, Guangzhou, China
67
School of Physics and Technology, Wuhan University, Wuhan, China
68
Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia
69
Universität Bonn-Helmholtz-Institut für Strahlen und Kernphysik, Bonn, Germany
70
Eotvos Lorand University, Budapest, Hungary
71
INFN Sezione di Perugia, Perugia, Italy
72
Van Swinderen Institute, University of Groningen, Groningen, The Netherlands
73
Universiteit Maastricht, Maastricht, The Netherlands
74
DS4DS, La Salle, Universitat Ramon Llull, Barcelona, Spain
75
Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden
76
University of Michigan, Ann Arbor, MI, USA
77
Universidade Federal do Triângulo Mineiro (UFTM), Uberaba-MG, Brazil
78
Central South University, Changsha, China
79
Hangzhou Institute for Advanced Study, UCAS, Hangzhou, China
80
Excellence Cluster ORIGINS, Munich, Germany
81
Universidad Nacional Autónoma de Honduras, Tegucigalpa, Honduras
82
Università di Bari, Bari, Italy
83
Università di Bologna, Bologna, Italy
84
Università di Cagliari, Cagliari, Italy
85
Università di Ferrara, Ferrara, Italy
86
Università di Firenze, Florence, Italy
87
Università di Genova, Genoa, Italy
88
Università degli Studi di Milano, Milan, Italy
89
Università di Milano Bicocca, Milan, Italy
90
Università di Modena e Reggio Emilia, Modena, Italy
91
Università di Padova, Padua, Italy
92
Università di Perugia, Perugia, Italy
93
Scuola Normale Superiore, Pisa, Italy
94
Università di Pisa, Pisa, Italy
95
Università della Basilicata, Potenza, Italy
96
Università di Roma Tor Vergata, Rome, Italy
97
Università di Siena, Siena, Italy
98
Università di Urbino, Urbino, Italy
99
CERN, 1211, Geneva 23, Switzerland
Received:
8
June
2022
Accepted:
2
October
2022
Published online:
17
July
2023
Using a proton–proton collision data sample collected by the LHCb detector and corresponding to an integrated luminosity of 
, the lifetime of the light 
mass eigenstate, 
, is measured using the 
decay mode to be 
A combination of this result with a previous LHCb analysis using an independent dataset corresponding to 3 fb
of integrated luminosity gives 
where the first uncertainty is statistical, the second due to the uncorrelated part of the systematic uncertainty and the third due to the correlated part of the systematic uncertainty.
S. Eidelman, M.-N. Minard, J. D. Roth, B. Spaan, S. Stone: Deceased.
© The Author(s) 2023
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