First Measurement of Polarizations in the Decay D0 → ωφ

被引：3
|
作者：
Ablikim, M. [1 ]
Achasov, M. N. [10 ,81 ]
Adlarson, P. [74 ]
Ahmed, S. [15 ]
Albrecht, M. [4 ]
Aliberti, R. [31 ]
Amoroso, A. [70 ,71 ,73 ]
An, M. R. [35 ]
An, Q. [52 ,67 ]
Bai, X. H. [61 ]
Bai, Y. [51 ]
Bakina, O. [32 ]
Ferroli, R. Baldini [23 ]
Balossino, I [26 ]
Ban, Y. [41 ,91 ]
Begzsuren, K. [29 ]
Berger, N. [31 ]
Bertani, M. [23 ]
Bettoni, D. [26 ]
Bianchi, F. [70 ,71 ,73 ]
Bloms, J. [64 ]
Bortone, A. [70 ,71 ,73 ]
Boyko, I [32 ]
Briere, R. A. [5 ]
Cai, H. [75 ]
Cai, X. [1 ,52 ]
Calcaterra, A. [23 ]
Cao, G. F. [1 ,58 ]
Cao, N. [1 ,58 ]
Cetin, S. A. [56 ]
Chang, J. F. [1 ,52 ]
Chang, W. L. [1 ,58 ]
Chelkov, G. [32 ,80 ]
Chen, D. Y. [6 ]
Chen, G. [1 ]
Chen, H. S. [1 ,58 ]
Chen, M. L. [1 ,52 ]
Chen, S. J. [38 ]
Chen, X. R. [28 ]
Chen, Y. B. [1 ,52 ]
Chen, Z. J. [20 ,92 ]
Cheng, W. S. [73 ]
Cibinetto, G. [26 ]
Cossio, F. [73 ]
Cui, X. F. [39 ]
Dai, H. L. [1 ,52 ]
Dai, X. C. [1 ,58 ]
Dbeyssi, A. [15 ]
de Boer, R. E. [4 ]
Dedovich, D. [32 ]
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, Staudinger Weg 18, 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, 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 Perugia, 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 Modern Phys, Lanzhou 730000, Peoples R China
[29] Inst Phys & Technol, Peace Ave 54B, Ulaanbaatar 13330, Mongolia
[30] Jilin Univ, Changchun 130012, Peoples R China
[31] Johannes Gutenberg Univ Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany
[32] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia
[33] Justus Liebig Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany
[34] Lanzhou Univ, Lanzhou 730000, Peoples R China
[35] Liaoning Normal Univ, Dalian 116029, Peoples R China
[36] Liaoning Univ, Shenyang 110036, Peoples R China
[37] Nanjing Normal Univ, Nanjing 210023, Peoples R China
[38] Nanjing Univ, Nanjing 210093, Peoples R China
[39] Nankai Univ, Tianjin 300071, Peoples R China
[40] North China Elect Power Univ, Beijing 102206, Peoples R China
[41] Peking Univ, Beijing 100871, Peoples R China
[42] Qufu Normal Univ, Qufu 273165, Shandong, Peoples R China
[43] Shandong Normal Univ, Jinan 250014, Peoples R China
[44] Shandong Univ, Jinan 250100, Peoples R China
[45] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China
[46] Shanxi Normal Univ, Linfen 041004, Shanxi, Peoples R China
[47] Shanxi Univ, Taiyuan 030006, Peoples R China
[48] Sichuan Univ, Chengdu 610064, Peoples R China
[49] Soochow Univ, Suzhou 215006, Peoples R China
[50] South China Normal Univ, Guangzhou 510006, Peoples R China
来源：
PHYSICAL REVIEW LETTERS | 2022年 / 128卷 / 01期
基金：
瑞典研究理事会; 中国国家自然科学基金;
关键词：
MODEL;
D O I：
10.1103/PhysRevLett.128.011803
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Using a data sample corresponding to an integrated luminosity of 2.93 fb(-1) collected at a center-of-mass energy root s = 3.773 GeV by the BESIII detector, the decay D-0 -> omega phi is observed for the first time. The branching fraction is measured to be (6.48 +/- 10.9 +/- 1 0.40) x 10(-4) with a significance of 6.3 sigma, where the first and second uncertainties are statistical and systematic, respectively. An angular analysis reveals that the phi and omega mesons from the D-0 -> omega phi decay are transversely polarized. The 95% confidence level upper limit on longitudinal polarization fraction is set to be less than 0.24, which is inconsistent with current theoretical expectations and challenges our understanding of the underlying dynamics in charm meson decays.
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页数：8
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