Observation of chi(c2) -> eta 'eta ' and chi(c0,2) -> eta eta ' | |
Ablikim, M.1; Achasov, M. N.9,70; Ahmed, S.14; Albrecht, M.4; Amoroso, A.60,62; An, F. F.1; An, Q.43,44,57; Bai, J. Z.1; Bai, Y.42; Bakina, O.27 | |
刊名 | Physical review d |
2017-12-18 | |
卷号 | 96期号:11页码:8 |
ISSN号 | 2470-0010 |
DOI | 10.1103/physrevd.96.112006 |
通讯作者 | Zheng, b.(zhengbo_usc@163.com) |
英文摘要 | Using a sample of 448.1 x 10(6) psi(3686) events collected with the besiii detector in 2009 and 2012, we study the decays chi(c0,2) -> eta 'eta ' and eta eta '. the decays chi(c2) -> eta 'eta ', chi(c0) -> eta eta ' and chi(c2) -> eta eta ' are observed for the first time with statistical significances of 9.6 sigma, 13.4 sigma and 7.5 sigma, respectively. the branching fractions are determined to be b(chi(c0) -> eta 'eta ') = (2.19 +/- 0.03 +/- 0.14) x 10(-3), b(chi(c2) -> eta 'eta ') = (4.76 +/- 0.56 +/- 0.38) x 10(-5), b(chi(c0) -> eta eta ') = (8.92 +/- 0.84 +/- 0.65) x 10(-5) and b(chi(c2) -> eta eta ') = (2.27 +/- 0.43 +/- 0.25) x 10(-5), where the first uncertainties are statistical and the second are systematic. the precision for the measurement of b(chi(c0) -> eta 'eta ') thorn is significantly improved compared to previous measurements. based on the measured branching fractions, the role played by the doubly and singly okubo-zweig-iizuka disconnected transition amplitudes for chi(c0,2) decays into pseudoscalar meson pairs can be clarified. |
WOS关键词 | DECAY |
WOS研究方向 | Astronomy & Astrophysics ; Physics |
WOS类目 | Astronomy & Astrophysics ; Physics, Particles & Fields |
语种 | 英语 |
出版者 | AMER PHYSICAL SOC |
WOS记录号 | WOS:000418202000001 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2178273 |
专题 | 高能物理研究所 |
通讯作者 | Zheng, B. |
作者单位 | 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,Raiwind Rd, Lahore 54000, Pakistan 9.GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia 10.GSI Helmholtz Ctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany |
推荐引用方式 GB/T 7714 | Ablikim, M.,Achasov, M. N.,Ahmed, S.,et al. Observation of chi(c2) -> eta 'eta ' and chi(c0,2) -> eta eta '[J]. Physical review d,2017,96(11):8. |
APA | Ablikim, M..,Achasov, M. N..,Ahmed, S..,Albrecht, M..,Amoroso, A..,...&Zou, J. H..(2017).Observation of chi(c2) -> eta 'eta ' and chi(c0,2) -> eta eta '.Physical review d,96(11),8. |
MLA | Ablikim, M.,et al."Observation of chi(c2) -> eta 'eta ' and chi(c0,2) -> eta eta '".Physical review d 96.11(2017):8. |
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