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

被引：26

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：

澳大利亚研究理事会; 加拿大自然科学与工程研究理事会;

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

页数：9

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