| Measurement of the Absolute Branching Fraction of Ds+ →τ+ντ via τ+ →e+νe ν ¯ τ | |
| 2021-10-22 | |
| Source Publication | PHYSICAL REVIEW LETTERS Impact Factor & Quartile |
| ISSN | 0031-9007 |
| EISSN | 1079-7114 |
| Volume | 127Issue:17 |
| page numbers | 9 |
| Abstract | Using a dataset of 6.32 fb-1 of e+e- annihilation data collected with the BESIII detector at center-of-mass energies between 4178 and 4226 MeV, we have measured the absolute branching fraction of the leptonic decay Ds+→τ+ντ via τ+→e+νeν¯τ, and find BDs+→τ+ντ=(5.27±0.10±0.12)×10-2, where the first uncertainty is statistical and the second is systematic. The precision is improved by a factor of 2 compared to the previous best measurement. Combining with fDs+ from lattice quantum chromodynamics calculations or the |Vcs| from the CKMfitter group, we extract |Vcs|=0.978±0.009±0.012 and fDs+=(251.1±2.4±3.0) MeV, respectively. Combining our result with the world averages of BDs+→τ+ντ and BDs+→μ+νμ, we obtain the ratio of the branching fractions BDs+→τ+ντ/BDs+→μ+νμ=9.72±0.37, which is consistent with the standard model prediction of lepton flavor universality. © 2021 authors. Published by the American Physical Society. |
| Keyword | Atomicphysics Absolutebranchingfractions Branchingfractions Center of massenergies Centre of massenergies Latticequantumchromodynamics Leptonicdecay Measurementsof Modelprediction Thestandardmodel Uncertainty |
| Publisher | American Physical Society |
| DOI | 10.1103/PhysRevLett.127.171801 |
| Indexed By | EI ; SCIE |
| Language | 英语 |
| WOS Research Area | Physics |
| WOS Subject | Physics, Multidisciplinary |
| WOS ID | WOS:000748548600003 |
| EI Accession Number | 20214611165785 |
| EI Classification Number | 931.3 Atomic and Molecular Physics ; 931.4 Quantum Theory ; Quantum Mechanics |
| Original Document Type | Journal article (JA) |
| PMID | 34739288 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/469742 |
| Collection | 兰州大学 |
| Corresponding Author | Ablikim, M. |
| Affiliation | 1.Institute of High Energy Physics, Beijing; 100049, China; 2.Beihang University, Beijing; 100191, China; 3.Beijing Institute of Petrochemical Technology, Beijing; 102617, China; 4.Bochum Ruhr-University, Bochum; D-44780, Germany; 5.Carnegie Mellon University, Pittsburgh; PA; 15213, United States; 6.Central China Normal University, Wuhan; 430079, China; 7.China Center of Advanced Science and Technology, Beijing; 100190, China; 8.COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore; 54000, Pakistan; 9.Fudan University, Shanghai; 200443, China; 10.G.I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk; 630090, Russia; 11.GSI Helmholtzcentre for Heavy Ion Research GmbH, Darmstadt; D-64291, Germany; 12.Guangxi Normal University, Guilin; 541004, China; 13.Guangxi University, Nanning; 530004, China; 14.Hangzhou Normal University, Hangzhou; 310036, China; 15.Helmholtz Institute Mainz, Staudinger Weg 18, Mainz; D-55099, Germany; 16.Henan Normal University, Xinxiang; 453007, China; 17.Henan University of Science and Technology, Luoyang; 471003, China; 18.Huangshan College, Huangshan; 245000, China; 19.Hunan Normal University, Changsha; 410081, China; 20.Hunan University, Changsha; 410082, China; 21.Indian Institute of Technology Madras, Chennai; 600036, India; 22.Indiana University, Bloomington; IN; 47405, United States; 23.INFN, Laboratori Nazionali di Frascati, Frascati; I-00044, Italy; 24.INFN, Sezione di Perugia, Perugia; I-06100, Italy; 25.University of Perugia, Perugia; I-06100, Italy; 26.INFN, Sezione di Ferrara, Ferrara; I-44122, Italy; 27.University of Ferrara, Ferrara; I-44122, Italy; 28.Institute of Modern Physics, Lanzhou; 730000, China; 29.Institute of Physics and Technology, Peace Ave. 54B, Ulaanbaatar; 13330, Mongolia; 30.Jilin University, Changchun; 130012, China; 31.Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, Mainz; D-55099, Germany; 32.Joint Institute for Nuclear Research, Dubna, Moscow region; 141980, Russia; 33.Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, Giessen; D-35392, Germany; 34.Lanzhou University, Lanzhou; 730000, China; 35.Liaoning Normal University, Dalian; 116029, China; 36.Liaoning University, Shenyang; 110036, China; 37.Nanjing Normal University, Nanjing; 210023, China; 38.Nanjing University, Nanjing; 210093, China; 39.Nankai University, Tianjin; 300071, China; 40.North China Electric Power University, Beijing; 102206, China; 41.Peking University, Beijing; 100871, China; 42.Qufu Normal University, Qufu; 273165, China; 43.Shandong Normal University, Jinan; 250014, China; 44.Shandong University, Jinan; 250100, China; 45.Shanghai Jiao Tong University, Shanghai; 200240, China; 46.Shanxi Normal University, Linfen; 041004, China; 47.Shanxi University, Taiyuan; 030006, China; 48.Sichuan University, Chengdu; 610064, China; 49.Soochow University, Suzhou; 215006, China; 50.South China Normal University, Guangzhou; 510006, China; 51.Southeast University, Nanjing; 211100, China; 52.State Key Laboratory of Particle Detection and Electronics, Beijing; 100049, China; 53.Sun Yat-Sen University, Guangzhou; 510275, China; 54.Suranaree University of Technology, University Avenue 111, Nakhon Ratchasima; 30000, Thailand; 55.Tsinghua University, Beijing; 100084, China; 56.Turkish Accelerator Center Particle Factory Group, Istanbul Bilgi University, Eyup, Istanbul; 34060, Turkey; 57.Near East University, Nicosia, North Cyprus, Mersin 10, Turkey; 58.University of Chinese Academy of Sciences, Beijing; 100049, China; 59.University of Groningen, Groningen; NL-9747 AA, Netherlands; 60.University of Hawaii, Honolulu; HI; 96822, United States; 61.University of Jinan, Jinan; 250022, China; 62.University of Manchester, Oxford Road, Manchester; M13 9PL, United Kingdom; 63.University of Minnesota, Minneapolis; MN; 55455, United States; 64.University of Muenster, Wilhelm-Klemm-Str. 9, Muenster; 48149, Germany; 65.University of Oxford, Keble Road, Oxford; OX13RH, United Kingdom; 66.University of Science and Technology Liaoning, Anshan; 114051, China; 67.University of Science and Technology of China, Hefei; 230026, China; 68.University of South China, Hengyang; 421001, China; 69.University of the Punjab, Lahore; 54590, Pakistan; 70.University of Turin, INFN, Turin; I-10125, Italy; 71.University of Eastern Piedmont, Alessandria; I-15121, Italy; 72.INFN, Turin; I-10125, Italy; 73.Uppsala University, Box 516, Uppsala; SE-75120, Sweden; 74.Wuhan University, Wuhan; 430072, China; 75.Xinyang Normal University, Xinyang; 464000, China; 76.Zhejiang University, Hangzhou; 310027, China; 77.Zhengzhou University, Zhengzhou; 450001, China; 78.Bogazici University, Istanbul; 34342, Turkey; 79.Moscow Institute of Physics and Technology, Moscow; 141700, Russia; 80.Novosibirsk State University, Novosibirsk; 630090, Russia; 81.NRC, Kurchatov Institute, PNPI, Gatchina; 188300, Russia; 82.Istanbul Arel University, Istanbul; 34295, Turkey; 83.Goethe University Frankfurt, Frankfurt am Main; 60323, Germany; 84.Key Laboratory for Particle Physics, Astrophysics and Cosmology, Ministry of Education, Shanghai Key Laboratory for Particle Physics and Cosmology, Institute of Nuclear and Particle Physics, Shanghai; 200240, China; 85.Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai; 200443, China; 86.Harvard University, Department of Physics, Cambridge; MA; 02138, United States; 87.State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing; 100871, China |
| Recommended Citation GB/T 7714 | Ablikim, M.,Achasov, M.N.,Adlarson, P.,et al. Measurement of the Absolute Branching Fraction of Ds+ →τ+ντ via τ+ →e+νe ν ¯ τ[J]. PHYSICAL REVIEW LETTERS,2021,127(17). |
| APA | Ablikim, M..,Achasov, M.N..,Adlarson, P..,Ahmed, S..,Albrecht, M..,...&Lavezzi, L..(2021).Measurement of the Absolute Branching Fraction of Ds+ →τ+ντ via τ+ →e+νe ν ¯ τ.PHYSICAL REVIEW LETTERS,127(17). |
| MLA | Ablikim, M.,et al."Measurement of the Absolute Branching Fraction of Ds+ →τ+ντ via τ+ →e+νe ν ¯ τ".PHYSICAL REVIEW LETTERS 127.17(2021). |
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