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	Evidence for psi ' decays into gamma pi(0) and gamma eta
	Ablikim, M.1; Achasov, M. N.5; An, L.9; An, Q.35; An, Z. H.1; Bai, J. Z.1; Baldini, R.17; Ban, Y.22; Becker, J.2; Berger, N.1
刊名	Physical review letters
	2010-12-20
卷号	105期号:26页码:6
ISSN号	0031-9007
DOI	10.1103/physrevlett.105.261801
通讯作者	Ablikim, m.()
英文摘要	The decays psi' -> gamma pi(0), gamma eta and gamma eta' are studied using data collected with the besiii detector at the bepcii e(+)e(-) collider. the processes psi' -> gamma pi(0) and psi' -> gamma eta are observed for the first time with signal significances of 4.6 sigma and 4.3 sigma, respectively. the branching fractions are determined to be b(psi' -> gamma pi(0)) = (1.58 +/- 0.40 +/- 0.13) x 10(-6), b(psi' -> gamma eta) = (1.38 +/- 0.48 +/- 0.09 +/- 10(-6)) and b(psi' -> gamma eta') = (126 +/- 3 +/- 8) x 10(-6), where the first errors are statistical and the second ones systematic.
WOS关键词	RADIATIVE DECAYS ; QUANTUM CHROMODYNAMICS ; PSEUDOSCALAR MESONS ; EXCLUSIVE PROCESSES ; PHOTON ; STATES ; QCD
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000286754700003
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2410946
专题	中国科学院大学
通讯作者	Ablikim, M.
作者单位	1.Inst High Energy Phys, Beijing 100049, Peoples R China 2.Ruhr Univ Bochum, D-44780 Bochum, Germany 3.Carnegie Mellon Univ, Pittsburgh, PA 15213 USA 4.China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China 5.GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia 6.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 7.GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany 8.Guangxi Normal Univ, Guilin 541004, Peoples R China 9.Guangxi Univ, Nanning 530004, Peoples R China 10.Henan Normal Univ, Xinxiang 453007, Peoples R China
推荐引用方式 GB/T 7714	Ablikim, M.,Achasov, M. N.,An, L.,et al. Evidence for psi ' decays into gamma pi(0) and gamma eta[J]. Physical review letters,2010,105(26):6.
APA	Ablikim, M..,Achasov, M. N..,An, L..,An, Q..,An, Z. H..,...&Zweber, P..(2010).Evidence for psi ' decays into gamma pi(0) and gamma eta.Physical review letters,105(26),6.
MLA	Ablikim, M.,et al."Evidence for psi ' decays into gamma pi(0) and gamma eta".Physical review letters 105.26(2010):6.

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