Measurement of the Dynamics of the Decays Ds+ → η(′)e+νe

被引：25

作者：

Ablikim, M. ^{[1
]}

Achasov, M. N. ^{[10
,70
]}

Ahmed, S. ^{[15
]}

Albrecht, M. ^{[4
]}

Alekseev, M. ^{[59
,61
]}

Amoroso, A. ^{[59
,61
]}

An, F. F. ^{[1
]}

An, Q. ^{[45
,56
]}

Bai, J. Z. ^{[1
]}

Bai, Y. ^{[44
]}

Bakina, O. ^{[30
]}

Ferroli, R. Baldini ^{[23
]}

Ban, Y. ^{[38
]}

Begzsuren, K. ^{[28
]}

Bennett, D. W. ^{[22
]}

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

Berger, N. ^{[29
]}

Bertani, M. ^{[23
]}

Bettoni, D. ^{[26
]}

Bianchi, F. ^{[59
,61
]}

Boger, E. ^{[30
,68
]}

Boyko, I ^{[30
]}

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

Cai, H. ^{[63
]}

Cai, X. ^{[1
,45
]}

Calcaterra, A. ^{[23
]}

Cao, G. F. ^{[1
,50
]}

Cetin, S. A. ^{[48
]}

Chai, J. ^{[61
]}

Chang, J. F. ^{[1
,45
]}

Chelkov, G. ^{[30
,68
,69
]}

Chen, G. ^{[1
]}

Chen, H. S. ^{[1
,50
]}

Chen, J. C. ^{[1
]}

Chen, M. L. ^{[1
,45
]}

Chen, P. L. ^{[57
]}

Chen, S. J. ^{[36
]}

Chen, X. R. ^{[33
]}

Chen, Y. B. ^{[1
,45
]}

Cheng, W. ^{[61
]}

Chu, X. K. ^{[38
]}

Cibinetto, G. ^{[26
]}

Cossio, F. ^{[61
]}

Dai, H. L. ^{[1
,45
]}

Dai, J. P. ^{[40
,74
,75
,76
]}

Dbeyssi, A. ^{[15
]}

Dedovich, D. ^{[30
]}

Deng, Z. Y. ^{[1
]}

Denig, A. ^{[29
]}

Denysenko, I ^{[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, Hubei, Peoples R China

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

[8] COMSATS Inst Informat Technol, 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, Zhejiang, Peoples R China

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

[16] Henan Normal Univ, Xinxiang 453007, 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, Hunan, 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, I-06100 Perugia, Italy

[25] Univ Perugia, I-06100 Perugia, Italy

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

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

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

[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, Gansu, Peoples R China

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

[35] Nanjing Normal Univ, Nanjing 210023, Jiangsu, Peoples R China

[36] Nanjing Univ, Nanjing 210093, Jiangsu, Peoples R China

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

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

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

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

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

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

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

[44] Southeast Univ, Nanjing 211100, Jiangsu, Peoples R China

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

[46] Sun Yat Sen Univ, Guangzhou 510275, Guangdong, Peoples R China

[47] Tsinghua Univ, Beijing 100084, Peoples R China

[48] Istanbul Bilgi Univ, TR-34060 Istanbul, Turkey

[49] Near East Univ, TR-10 Mersin, North Cyprus, Turkey

[50] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2019年 / 122卷 / 11期

基金：

瑞典研究理事会; 中国国家自然科学基金;

关键词：

Approximation theory - Germanium compounds - Annihilation;

D O I：

10.1103/PhysRevLett.122.121801

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 3.19 fb(-1) collected at a center-of-mass energy of 4.178 GeV with the BESIII detector, we measure the absolute branching fractions BDs+->eta e+nu e = (2.323 +/- 0.063(stat) +/- 0.063(syst))% and BDs+->eta'e+nu e = (0.824 +/- 0.073(stat) +/- 0.027(syst))% via a tagged analysis technique, where one D-s is fully reconstructed in a hadronic mode. Combining these measurements with previous BESIII measurements of BD+->eta(')e+nu e,the eta - eta' mixing angle in the quark flavor basis is determined to be phi(P) = (40.1 +/- 2.1(stat) +/- 0.7(syst))degrees. From the first measurements of the dynamics of D-s(+) -> eta(')e(+)nu(e) decays, the products of the hadronic form factors f(+)(eta('))(0) and the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cs vertical bar are determined with different form factor parametrizations. For the two-parameter series expansion, the results are f(+)(eta) (0) vertical bar V-cs vertical bar = 0.4455 +/- 0.0053(stat) +/- 0.0044(syst) and f(+)(eta)' (0) vertical bar V-cs vertical bar and = 0.477 +/- 0.049(stat) +/- 0.011(syst).

引用

页数：9