Measurement of the Λc+ Lifetime

The Belle II Collaboration

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

An absolute measurement of the Λc+ lifetime is reported using Λc+→pK-π+ decays in events reconstructed from data collected by the Belle II experiment at the SuperKEKB asymmetric-energy electron-positron collider. The total integrated luminosity of the data sample, which was collected at center-of-mass energies at or near the δ(4S) resonance, is 207.2 fb-1. The result, τ(Λc+)=203.20±0.89±0.77 fs, where the first uncertainty is statistical and the second systematic, is the most precise measurement to date and is consistent with previous determinations.

Original languageEnglish
Article number071802
JournalPhysical Review Letters
Volume130
Issue number7
DOIs
StatePublished - 17 Feb 2023

Funding

FundersFunder number
Ministry of Education
Narodowe Centrum Nauki
Institut National de Physique Nucléaire et de Physique des Particules
Korea Research Environment Open Network
Akademi Sains Malaysia
Universiti Malaya
National Institute of Informatics
Korea Institute of Science and Technology Information
Bundesministerium für Bildung, Wissenschaft und Forschung
Instituto Nazionale di Fisica Nucleare
Thailand Center of Excellence in Physics
Department of Science and Technology, Ministry of Science and Technology, India
Centre National de la Recherche Scientifique
Max-Planck-Gesellschaft
Bundesministerium für Bildung und Forschung
Ministry of Education and Science of Ukraine
Helmholtz-Gemeinschaft
Canarie
Deutsche Forschungsgemeinschaft
European Commission
Ministry of Education and Science of the Russian Federation
CAS Center for Excellence in Particle Physics
Natural Sciences and Engineering Research Council of Canada
TUBITAK ULAKBIM
Horizon 2020 ERC-Advanced
National Research University Higher School of Economics
Compute Canada
European Research Council
Ministerstwo Edukacji i Nauki
Generalitat Valenciana, Spain
GLORIAD
Horizon 2020 ERC-Consolidator
Alexander von Humboldt-Stiftung
Ministry of Education, Culture, Sports, Science and Technology
Seventh Framework Programme947006, 700525, 822070, 267104, 884719, 622527, 101026516, 1913789
Grantová Agentura České Republiky22-18469S
Horizon 2020 Framework Programme819127
National Research Foundation of Korea2022R1A2C1003993, 2016R1D1A1B02012900, 2018R1A2B3003643, 2018R1D1A1B07047294, RS-2022-00197659, 2019R1I1A3A01058933, 2018R1A6A1A06024970
National Natural Science Foundation of China11521505, 11761141009, 11975076, 11575017, 11705209, 11675166
Science Committee of the Republic of Armenia20TTCG-1C010
Japan Society for the Promotion of Science18H05226, 16H06492, 26400255, 18K03621, 22H00144, 19H00682, 26220706, 17H01133, 22K21347, 16K05323, 16H03993, 16H03968, 17H05405, 18H03710
Austrian Science FundP 31361, J 4625, P 31361-N36
Agencia Estatal de InvestigaciónRYC2020-029875-I
Shanghai Pujiang Program18PJ1401000
National Science FoundationPHY-2111604, PHY-1913789, 1913789
Australian Research CouncilDP170102204, FT120100745, DP180102629, DP150103061, DE220100462, FT130100018, DP170102389, FT130100303
University of TabukS-0280-1439, S-0256-1438
Javna Agencija za Raziskovalno Dejavnost RSJ1-9124, P1-0135
CIDEGENT/2018/020 Ministry of Science and TechnologyMOST107-2119-M-002-035-MY3, MOST106-2112-M-002-005-MY3
Ministerstvo Školství, Mládeže a TělovýchovyLTT17020
Univerzita Karlova v PrazeSVV 260448
National Research Foundation of Ukraine2020.02/0257
Seventh FrameworkPIEF-GA-2013-622527
Israel Ministry of Science3-16543
Chinese Academy of SciencesQYZDJ-SSW-SLH011
Department of Atomic Energy, Government of IndiaRTI 4002
Vietnam Academy of Science and TechnologyDL0000.05/21-23
U.S. Department of EnergyDE-SC0010007, DE-AC06-76RLO1830, DE-SC0010118, DE-SC0010504, DE-SC0012704, DE-SC0010073, DE-SC0011784, DE-SC0021274, DE-SC0022350, DE-SC0019230, DE-SC0009824, DE-SC0007983, DE-SC0009973
Horizon 2020 Marie Sklodowska-Curie101026516
Liaoning Revitalization Talents ProgramXLYC1807135
United States-Israel Binational Science Foundation2016113
Ministry of Higher Education, Malaysia237, FOINS-296, CB-180023, CB-254409, CB-236394, CB-221329
Israel Science Foundation2476/17

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