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.
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