Study of the Decay and Production Properties of Ds1 (2536) and Ds2∗ (2573)

被引:0
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作者
Ablikim, M. [1 ]
Achasov, M.N. [4 ,93 ]
Adlarson, P. [85 ]
Afedulidis, O. [3 ]
Ai, X.C. [90 ]
Aliberti, R. [38 ]
Amoroso, A. [82 ,84 ]
An, Q. [61 ,79 ]
Bai, Y. [60 ]
Bakina, O. [39 ]
Balossino, I. [31 ]
Ban, Y. [49 ,98 ]
Bao, H.-R. [71 ]
Batozskaya, V. [1 ,47 ]
Begzsuren, K. [35 ]
Berger, N. [38 ]
Berlowski, M. [47 ]
Bertani, M. [28 ]
Bettoni, D. [31 ]
Bianchi, F. [82 ,84 ]
Bianco, E. [82 ,84 ]
Bortone, A. [82 ,84 ]
Boyko, I. [39 ]
Briere, R.A. [5 ]
Brueggemann, A. [76 ]
Cai, H. [86 ]
Cai, X. [1 ,61 ]
Calcaterra, A. [28 ]
Cao, G.F. [1 ,71 ]
Cao, N. [1 ,71 ]
Cetin, S.A. [65 ]
Chai, X.Y. [49 ,98 ]
Chang, J.F. [1 ,61 ]
Che, G.R. [46 ]
Che, Y.Z. [1 ,61 ,71 ]
Chelkov, G. [39 ,92 ]
Chen, C. [46 ]
Chen, C.H. [9 ]
Chen, Chao [58 ]
Chen, G. [1 ]
Chen, H.S. [1 ,71 ]
Chen, H.Y. [20 ]
Chen, M.L. [1 ,61 ,71 ]
Chen, S.J. [45 ]
Chen, S.L. [48 ]
Chen, S.M. [64 ]
Chen, T. [1 ,71 ]
Chen, X.R. [34 ,71 ]
Chen, X.T. [1 ,71 ]
Chen, Y.B. [1 ,61 ]
机构
[1] Institute of High Energy Physics, Beijing,100049, China
[2] Beihang University, Beijing,100191, China
[3] Bochum Ruhr-University, Bochum,D-44780, Germany
[4] Budker Institute of Nuclear Physics SB RAS (BINP), Novosibirsk,630090, Russia
[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] China University of Geosciences, Wuhan,430074, China
[10] Chung-Ang University, Seoul,06974, Korea, Republic of
[11] COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road, Lahore,54000, Pakistan
[12] Fudan University, Shanghai,200433, China
[13] GSI Helmholtzcentre for Heavy Ion Research GmbH, Darmstadt,D-64291, Germany
[14] Guangxi Normal University, Guilin,541004, China
[15] Guangxi University, Nanning,530004, China
[16] Hangzhou Normal University, Hangzhou,310036, China
[17] Hebei University, Baoding,071002, China
[18] Helmholtz Institute Mainz, Staudinger Weg 18, Mainz,D-55099, Germany
[19] Henan Normal University, Xinxiang,453007, China
[20] Henan University, Kaifeng,475004, China
[21] Henan University of Science and Technology, Luoyang,471003, China
[22] Henan University of Technology, Zhengzhou,450001, China
[23] Huangshan College, Huangshan,245000, China
[24] Hunan Normal University, Changsha,410081, China
[25] Hunan University, Changsha,410082, China
[26] Indian Institute of Technology Madras, Chennai,600036, India
[27] Indiana University, Bloomington,IN,47405, United States
[28] INFN Laboratori Nazionali di Frascati, INFN Laboratori Nazionali di Frascati, Frascati,I-00044, Italy
[29] INFN Sezione di Perugia, Perugia,I-06100, Italy
[30] University of Perugia, Perugia,I-06100, Italy
[31] INFN Sezione di Ferrara, INFN Sezione di Ferrara, Ferrara,I-44122, Italy
[32] University of Ferrara, Ferrara,I-44122, Italy
[33] Inner Mongolia University, Hohhot,010021, China
[34] Institute of Modern Physics, Lanzhou,730000, China
[35] Institute of Physics and Technology, Peace Avenue 54B, Ulaanbaatar,13330, Mongolia
[36] Instituto de Alta Investigación, Universidad de Tarapacá, Casilla 7D, Arica,1000000, Chile
[37] Jilin University, Changchun,130012, China
[38] Johannes Gutenberg University of Mainz, Johann-Joachim-Becher-Weg 45, Mainz,D-55099, Germany
[39] Joint Institute for Nuclear Research, Moscow region, Dubna,141980, Russia
[40] Justus-Liebig-Universitaet Giessen, II. Physikalisches Institut, Heinrich-Buff-Ring 16, Giessen,D-35392, Germany
[41] Lanzhou University, Lanzhou,730000, China
[42] Liaoning Normal University, Dalian,116029, China
[43] Liaoning University, Shenyang,110036, China
[44] Nanjing Normal University, Nanjing,210023, China
[45] Nanjing University, Nanjing,210093, China
[46] Nankai University, Tianjin,300071, China
[47] National Centre for Nuclear Research, Warsaw,02-093, Poland
[48] North China Electric Power University, Beijing,102206, China
[49] Peking University, Beijing,100871, China
[50] Qufu Normal University, Qufu,273165, China
基金
中国国家自然科学基金; 新加坡国家研究基金会;
关键词
D O I
10.1103/PhysRevLett.133.171903
中图分类号
学科分类号
摘要
The e+e-→Ds+Ds1(2536)- and e+e-→Ds+Ds2∗(2573)- processes are studied using data samples collected with the BESIII detector at center-of-mass energies from 4.530 to 4.946 GeV. The absolute branching fractions of Ds1(2536)-→D¯∗0K- and Ds2∗(2573)-→D¯0K- are measured for the first time to be (35.9±4.8±3.5)% and (37.4±3.1±4.6)%, respectively. The e+e-→Ds+Ds1(2536)- and e+e-→Ds+Ds2∗(2573)- cross sections are measured, and a resonant structure at around 4.6 GeV with a width of 50 MeV is observed in both processes with a statistical significance of 7.2σ and 15σ, respectively. The state is observed for the first time in e+e-→Ds+Ds2∗(2573)- and could be the Y(4626) found by the Belle oration in the Ds+Ds1(2536)- final state, since they have similar masses and widths. There is also evidence for a structure at around 4.75 GeV in both processes. © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the https://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
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