| Evidence for the Cusp Effect in η′ Decays into ηπ0π0 | |
| 2023-02-24 | |
| Source Publication | Physical Review Letters
 |
| ISSN | 0031-9007 |
| Volume | 130Issue:8 |
| Abstract | Using a sample of 4.3×105 η′→ηπ0π0 events selected from the ten billion J/ψ event dataset collected with the BESIII detector, we study the decay η′→ηπ0π0 within the framework of nonrelativistic effective field theory. Evidence for a structure at π+π- mass threshold is observed in the invariant mass spectrum of π0π0 with a statistical significance of around 3.5σ, which is consistent with the cusp effect as predicted by the nonrelativistic effective field theory. After introducing the amplitude for describing the cusp effect, the ππ scattering length combination a0-a2 is determined to be 0.226±0.060stat±0.013syst, which is in good agreement with theoretical calculation of 0.2644±0.0051. © 2023 authors. Published by the American Physical Society. |
| Keyword | Atomic physics Effective field theory Invariant-mass spectra Nonrelativistic Scattering length Statistical significance Theoretical calculations |
| Publisher | American Physical Society |
| DOI | 10.1103/PhysRevLett.130.081901 |
| Indexed By | EI |
| Language | 英语 |
| EI Accession Number | 20231113701693 |
| EI Keywords | Mass spectrometry |
| EI Classification Number | 801 Chemistry ; 931.3 Atomic and Molecular Physics |
| Original Document Type | Journal article (JA) |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | https://ir.lzu.edu.cn/handle/262010/500785 |
| Collection | 兰州大学 |
| 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.Central South University, Changsha; 410083, China; 8.China Center of Advanced Science and Technology, Beijing; 100190, China; 9.COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore; 54000, Pakistan; 10.Fudan University, Shanghai; 200433, China; 11.G. I. Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk; 630090, Russia; 12.GSI Helmholtzcentre for Heavy Ion Research GmbH, Darmstadt; D-64291, Germany; 13.Guangxi Normal University, Guilin; 541004, China; 14.Guangxi University, Nanning; 530004, China; 15.Hangzhou Normal University, Hangzhou; 310036, China; 16.Hebei University, Baoding; 071002, China; 17.Helmholtz Institute Mainz, Staudinger Weg 18, Mainz; D-55099, Germany; 18.Henan Normal University, Xinxiang; 453007, China; 19.Henan University of Science and Technology, Luoyang; 471003, China; 20.Henan University of Technology, Zhengzhou; 450001, China; 21.Huangshan College, Huangshan; 245000, China; 22.Hunan Normal University, Changsha; 410081, China; 23.Hunan University, Changsha; 410082, China; 24.Indian Institute of Technology Madras, Chennai; 600036, India; 25.Indiana University, Bloomington; IN; 47405, United States; 26.INFN Laboratori Nazionali di Frascati, Frascati; I-00044, Italy; 27.INFN, Sezione di Perugia, Perugia; I-06100, Italy; 28.University of Perugia, Perugia; I-06100, Italy; 29.INFN Sezione di Ferrara, Ferrara; I-44122, Italy; 30.University of Ferrara, Ferrara; I-44122, Italy; 31.Institute of Modern Physics, Lanzhou; 730000, China; 32.Institute of Physics and Technology, Peace Avenue 54B, Ulaanbaatar; 13330, Mongolia; 33.Jilin University, Changchun; 130012, China; 34.Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, Mainz; D-55099, Germany; 35.Joint Institute for Nuclear Research, Moscow Region, Dubna; 141980, Russia; 36.Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, Giessen; D-35392, Germany; 37.Lanzhou University, Lanzhou; 730000, China; 38.Liaoning Normal University, Dalian; 116029, China; 39.Liaoning University, Shenyang; 110036, China; 40.Nanjing Normal University, Nanjing; 210023, China; 41.Nanjing University, Nanjing; 210093, China; 42.Nankai University, Tianjin; 300071, China; 43.National Centre for Nuclear Research, Warsaw; 02-093, Poland; 44.North China Electric Power University, Beijing; 102206, China; 45.Peking University, Beijing; 100871, China; 46.Qufu Normal University, Qufu; 273165, China; 47.Shandong Normal University, Jinan; 250014, China; 48.Shandong University, Jinan; 250100, China; 49.Shanghai Jiao Tong University, Shanghai; 200240, China; 50.Shanxi Normal University, Linfen; 041004, China; 51.Shanxi University, Taiyuan; 030006, China; 52.Sichuan University, Chengdu; 610064, China; 53.Soochow University, Suzhou; 215006, China; 54.South China Normal University, Guangzhou; 510006, China; 55.Southeast University, Nanjing; 211100, China; 56.State Key Laboratory of Particle Detection and Electronics, Beijing; 100049, China; 57.Sun Yat-Sen University, Guangzhou; 510275, China; 58.Suranaree University of Technology, University Avenue 111, Nakhon Ratchasima; 30000, Thailand; 59.Tsinghua University, Beijing; 100084, China; 60.Turkish Accelerator Center Particle Factory Group, Istinye University, Istanbul; 34010, Turkey; 61.Near East University, North Cyprus, Mersin 10, Nicosia, Turkey; 62.University of Chinese Academy of Sciences, Beijing; 100049, China; 63.University of Groningen, Groningen; NL-9747 AA, Netherlands; 64.University of Hawaii, Honolulu; HI; 96822, United States; 65.University of Jinan, Jinan; 250022, China; 66.University of Manchester, Oxford Road, Manchester; M13 9PL, United Kingdom; 67.University of Muenster, Wilhelm-Klemm-Strasse 9, Muenster; 48149, Germany; 68.University of Oxford, Keble Road, Oxford; OX13RH, United Kingdom; 69.University of Science and Technology Liaoning, Anshan; 114051, China; 70.University of Science and Technology of China, Hefei; 230026, China; 71.University of South China, Hengyang; 421001, China; 72.University of the Punjab, Lahore; 54590, Pakistan; 73.University of Turin, INFN, Turin; I-10125, Italy; 74.University of Eastern Piedmont, Alessandria; I-15121, Italy; 75.INFN, Turin; I-10125, Italy; 76.Uppsala University, Box 516, Uppsala; SE-75120, Sweden; 77.Wuhan University, Wuhan; 430072, China; 78.Xinyang Normal University, Xinyang; 464000, China; 79.Yunnan University, Kunming; 650500, China; 80.Zhejiang University, Hangzhou; 310027, China; 81.Zhengzhou University, Zhengzhou; 450001, China; 82.China University of Geosciences, Wuhan; 430074, China |
| Recommended Citation GB/T 7714 | Ablikim, M.,Achasov, M.N.,Adlarson, P.,et al. Evidence for the Cusp Effect in η′ Decays into ηπ0π0[J]. Physical Review Letters,2023,130(8). |
| APA | Ablikim, M..,Achasov, M.N..,Adlarson, P..,Albrecht, M..,Aliberti, R..,...&Kiuchi, R..(2023).Evidence for the Cusp Effect in η′ Decays into ηπ0π0.Physical Review Letters,130(8). |
| MLA | Ablikim, M.,et al."Evidence for the Cusp Effect in η′ Decays into ηπ0π0".Physical Review Letters 130.8(2023). |
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