Precise measurements of branching fractions for D+s meson decays to two pseudoscalar mesons

被引：0

作者：

Ablikim, M. ^{[1
]}

Achasov, M. N. ^{[10
,77
]}

Adlarson, P. ^{[69
]}

Ahmed, S. ^{[15
]}

Albrecht, M. ^{[4
]}

Amoroso, A. ^{[66
,68
]}

An, Q. ^{[49
,50
,63
]}

Anita ^{[21
]}

Bai, Y. ^{[48
]}

Bakina, O. ^{[30
]}

Ferroli, R. Baldini ^{[23
]}

Balossino, I ^{[24
]}

Ban, Y. ^{[39
,85
]}

Begzsuren, K. ^{[27
]}

Bennett, J., V ^{[5
]}

Berger, N. ^{[29
]}

Bertani, M. ^{[23
]}

Bettoni, D. ^{[24
]}

Bianchi, F. ^{[66
,68
]}

Biernat, J. ^{[69
]}

Bloms, J. ^{[60
]}

Bortone, A. ^{[66
,68
]}

Boyko, I ^{[30
]}

Briere, R. A. ^{[5
]}

Cai, H. ^{[70
]}

Cai, X. ^{[1
,49
,50
]}

Calcaterra, A. ^{[23
]}

Cao, G. F. ^{[1
,55
]}

Cao, N. ^{[1
,55
]}

Cetin, S. A. ^{[53
]}

Chang, J. F. ^{[1
,49
,50
]}

Chang, W. L. ^{[1
,55
]}

Chelkov, G. ^{[30
,75
,76
]}

Chen, D. Y. ^{[6
]}

Chen, G. ^{[1
]}

Chen, H. S. ^{[1
,55
]}

Chen, M. L. ^{[1
,49
,50
]}

Chen, S. J. ^{[37
]}

Chen, X. R. ^{[26
]}

Chen, Y. B. ^{[1
,49
,50
]}

Cheng, W. ^{[68
]}

Cibinetto, G. ^{[24
]}

Cossio, F. ^{[68
]}

Cui, X. F. ^{[38
]}

Dai, H. L. ^{[1
,49
,50
]}

Dai, J. P. ^{[43
,81
]}

Dai, X. C. ^{[1
,55
]}

Dbeyssi, A. ^{[15
]}

de Boer, R. B. ^{[4
]}

Dedovich, D. ^{[30
]}

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] China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China

[8] COMSATS Univ Islamabad, Lahore Campus,Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan

[9] Fudan Univ, Shanghai 200443, Peoples R China

[10] GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia

[11] GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany

[12] Guangxi Normal Univ, Guilin 541004, Peoples R China

[13] Guangxi Univ, Nanning 530004, Peoples R China

[14] Hangzhou Normal Univ, Hangzhou 310036, Peoples R China

[15] Helmholtz Inst Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany

[16] Henan Normal Univ, Xinxiang 453007, Henan, Peoples R China

[17] Henan Univ Sci & Technol, Luoyang 471003, Peoples R China

[18] Huangshan Coll, Huangshan 245000, Peoples R China

[19] Hunan Normal Univ, Changsha 410081, Peoples R China

[20] Hunan Univ, Changsha 410082, Hunan, Peoples R China

[21] Indian Inst Technol Madras, Chennai 600036, Tamil Nadu, India

[22] Indiana Univ, Bloomington, IN 47405 USA

[23] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[24] Ist Nazl Fis Nucl, Sez Ferrara, I-44122 Ferrara, Italy

[25] Univ Ferrara, I-44122 Ferrara, Italy

[26] Inst Modern Phys, Lanzhou 730000, Peoples R China

[27] Inst Phys & Technol, Peace Ave 54B, Ulaanbaatar 13330, Mongolia

[28] Jilin Univ, Changchun 130012, Peoples R China

[29] Johannes Gutenberg Univ Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany

[30] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[31] Justus Liebig Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany

[32] Univ Groningen, KVI CART, NL-9747 AA Groningen, Netherlands

[33] Lanzhou Univ, Lanzhou 730000, Peoples R China

[34] Liaoning Normal Univ, Dalian 116029, Peoples R China

[35] Liaoning Univ, Shenyang 110036, Peoples R China

[36] Nanjing Normal Univ, Nanjing 210023, Peoples R China

[37] Nanjing Univ, Nanjing 210093, Peoples R China

[38] Nankai Univ, Tianjin 300071, Peoples R China

[39] Peking Univ, Beijing 100871, Peoples R China

[40] Qufu Normal Univ, Qufu 273165, Shandong, Peoples R China

[41] Shandong Normal Univ, Jinan 250014, Peoples R China

[42] Shandong Univ, Jinan 250100, Peoples R China

[43] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China

[44] Shanxi Normal Univ, Linfen 041004, Shanxi, Peoples R China

[45] Shanxi Univ, Taiyuan 030006, Peoples R China

[46] Sichuan Univ, Chengdu 610064, Peoples R China

[47] Soochow Univ, Suzhou 215006, Peoples R China

[48] Souast Univ, Nanjing 211100, Peoples R China

[49] State Key Lab Particle Detect & Elect, Beijing 100049, Peoples R China

[50] State Key Lab Particle Detect & Elect, Hefei 230026, Peoples R China

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2020年 / 08期

基金：

中国国家自然科学基金; 瑞典研究理事会;

关键词：

Branching fraction; Charm physics; e(+)-e(-) Experiments; TOF;

D O I：

10.1007/JHEP08(2020)146

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We measure the branching fractions for seven D-s(+) two-body decays to pseudoscalar mesons, by analyzing data collected at root s = 4:178 similar to 4:226 GeV with the BESIII detector at the BEPCII collider. The branching fractions are determined to be B(D-s(+) -> K+eta ') = (2:68 +/- 0:17 +/- 0:17 +/- 0:08) x 10(-3), B(D-s(+) -> eta 'pi(+)) = (37:8 +/- 0:4 +/- 2:1 +/- 1:2) x 10(-3), B(D-s(+) -> K+eta) = (1:62 +/- 0:10 +/- 0:03 +/- 0:05) x 10(-3), B(D-s(+) -> eta pi(+)) = (17:41 +/- 0:18 +/- 0:27 +/- 0:54) x 10(-3), B(D-s(+) -> (K+Ks0)) = (15:02 +/- 0:10 +/- 0:27 +/- 0:47) x 10(-3), B(D-s(+) -> K-s(0)pi(+)) = (1:109 +/- 0:034 +/- 0:023 +/- 0:035) x 10(-3), B(D-s(+) -> K+pi(0)) = (0:748 +/- 0:049 +/- 0:018 +/- 0:023) x 10(-3), where the first uncertainties are statistical, the second are systematic, and the third are from external input branching fraction of the normalization mode D-s(+) -> K+K-pi(+). Precision of our measurements is significantly improved compared with that of the current world average values.

引用

页数：18

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