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Evidence for psi ' decays into gamma pi(0) and gamma eta

文献类型:期刊论文

AuthorAblikim, 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
SourcePhysical review letters
Issued Date2010-12-20
Volume105Issue:26Pages:6
ISSN0031-9007
DOI10.1103/physrevlett.105.261801
Corresponding AuthorAblikim, m.()
English AbstractThe 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 KeywordRADIATIVE DECAYS ; QUANTUM CHROMODYNAMICS ; PSEUDOSCALAR MESONS ; EXCLUSIVE PROCESSES ; PHOTON ; STATES ; QCD
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Language英语
WOS IDWOS:000286754700003
PublisherAMER PHYSICAL SOC
URIhttp://www.irgrid.ac.cn/handle/1471x/2410946
Collection中国科学院大学
Corresponding AuthorAblikim, M.
Affiliation1.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
Recommended Citation
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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来源:中国科学院大学

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