Observation of an a0-like State with Mass of 1.817 GeV in the Study of DS+ → KS0K+ π0 Decays

被引：28
作者：
Ablikim, M. [1 ]
Achasov, M. N. [11 ,84 ]
Adlarson, P. [77 ]
Albrecht, M. [4 ]
Aliberti, R. [32 ]
Amoroso, A. [73 ,74 ,76 ]
An, M. R. [36 ]
An, Q. [54 ,55 ,70 ]
Bai, X. H. [64 ]
Bai, Y. [53 ]
Bakina, O. [33 ]
Ferroli, R. Baldini [25 ]
Balossino, I [27 ]
Ban, Y. [43 ,92 ]
Batozskaya, V [1 ,41 ]
Becker, D. [32 ]
Begzsuren, K. [30 ]
Berger, N. [32 ]
Bertani, M. [25 ]
Bettoni, D. [27 ]
Bianchi, F. [73 ,74 ,76 ]
Bloms, J. [67 ]
Bortone, A. [73 ,74 ,76 ]
Boyko, I [33 ]
Briere, R. A. [5 ]
Brueggemann, A. [67 ]
Cai, H. [78 ]
Cai, X. [1 ,54 ,55 ]
Calcaterra, A. [25 ]
Cao, G. F. [1 ,61 ]
Cao, N. [1 ,61 ]
Cetin, S. A. [59 ]
Chang, J. F. [1 ,54 ,55 ]
Chang, W. L. [1 ,61 ]
Chelkov, G. [33 ,83 ]
Chen, C. [40 ]
Chen, G. [1 ]
Chen, H. S. [1 ,61 ]
Chen, M. L. [1 ,54 ,55 ]
Chen, S. J. [39 ]
Chen, T. [1 ]
Chen, X. R. [29 ,61 ]
Chen, X. T. [1 ]
Chen, Y. B. [1 ,54 ,55 ]
Chen, Z. J. [22 ,93 ]
Cheng, W. S. [76 ]
Cibinetto, G. [27 ]
Cossio, F. [76 ]
Cui, J. J. [46 ]
Dai, H. L. [1 ,54 ,55 ]
机构：
[1] Inst High Energy Phys, Beijing 100049, Peoples R China
[2] Beihang Univ, Beijing 100191, Peoples R China
[3] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China
[4] Bochum Ruhr Univ, D-44780 Bochum, Germany
[5] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA
[6] Cent China Normal Univ, Wuhan 430079, Peoples R China
[7] Cent South Univ, Changsha 410083, Peoples R China
[8] China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China
[9] COMSATS Univ Islamabad, Lahore Campus,Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan
[10] Fudan Univ, Shanghai 200433, Peoples R China
[11] GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia
[12] GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany
[13] Guangxi Normal Univ, Guilin 541004, Peoples R China
[14] Guangxi Univ, Nanning 530004, Peoples R China
[15] Hangzhou Normal Univ, Hangzhou 310036, Peoples R China
[16] Helmholtz Inst Mainz, Staudinger Weg 18, D-55099 Mainz, Germany
[17] Henan Normal Univ, Xinxiang 453007, Henan, Peoples R China
[18] Henan Univ Sci & Technol, Luoyang 471003, Peoples R China
[19] Henan Univ Technol, Zhengzhou 450001, Peoples R China
[20] Huangshan Coll, Huangshan 245000, Peoples R China
[21] Hunan Normal Univ, Changsha 410081, Peoples R China
[22] Hunan Univ, Changsha 410082, Peoples R China
[23] Indian Inst Technol Madras, Chennai 600036, Tamil Nadu, India
[24] Indiana Univ, Bloomington, IN 47405 USA
[25] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy
[26] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy
[27] Ist Nazl Fis Nucl, Sez Ferrara, I-44122 Ferrara, Italy
[28] Univ Ferrara, I-44122 Ferrara, Italy
[29] Inst Modern Phys, Lanzhou 730000, Peoples R China
[30] Inst Phys & Technol, Peace Ave 54B, Ulaanbaatar 13330, Mongolia
[31] Jilin Univ, Changchun 130012, Peoples R China
[32] Johannes Gutenberg Univ Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany
[33] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia
[34] Justus Liebig Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany
[35] Lanzhou Univ, Lanzhou 730000, Peoples R China
[36] Liaoning Normal Univ, Dalian 116029, Peoples R China
[37] Liaoning Univ, Shenyang 110036, Peoples R China
[38] Nanjing Normal Univ, Nanjing 210023, Peoples R China
[39] Nanjing Univ, Nanjing 210093, Peoples R China
[40] Nankai Univ, Tianjin 300071, Peoples R China
[41] Natl Ctr Nucl Res, PL-02093 Warsaw, Poland
[42] North China Elect Power Univ, Beijing 102206, Peoples R China
[43] Peking Univ, Beijing 100871, Peoples R China
[44] Qufu Normal Univ, Qufu 273165, Shandong, Peoples R China
[45] Shandong Normal Univ, Jinan 250014, Peoples R China
[46] Shandong Univ, Jinan 250100, Peoples R China
[47] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China
[48] Shanxi Normal Univ, Linfen 041004, Shanxi, Peoples R China
[49] Shanxi Univ, Taiyuan 030006, Shanxi, Peoples R China
[50] Sichuan Univ, Chengdu 610064, Peoples R China
来源：
PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 18期
基金：
加拿大自然科学与工程研究理事会; 澳大利亚研究理事会;
关键词：
SEARCH; WAVE; A(0);
D O I：
10.1103/PhysRevLett.129.182001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Using e(+)e(-) annihilation data corresponding to an integrated luminosity of 6.32 fb(-1) collected at center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform the first amplitude analysis of the decay D-s(+) -> (KSK+)-K-0 pi(0) and determine the relative branching fractions and phases for intermediate processes. We observe an a(0)-like state with mass of 1.817 GeV in its decay to (KSK+)-K-0 for the first time. In addition, we measure the ratio {B[D-s(+) -> (K*) over bar (892)K-0(+)]/B[D-s(+) -> (K-0) over bar K*(892)(+)]} to be 2.35(-0.23stat)(+0.42) +/- 0.10(syst). Finally, we provide a precision measurement of the absolute branching fraction B(D-s(+) -> (KSK+)-K-0 pi(0))=(1.46 +/- 0.06(stat) +/- 0.05(syst))%.
引用
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页数：9
相关论文
共 49 条
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