标题:Experimental study of psi ' decays to K+K- pi(0) and K+K-eta
作者:Ablikim, M.; Achasov, M. N.; Albayrak, O.; Ambrose, D. J.; An, F. F.; An, Q.; Bai, J. Z.; Ban, Y.; Becker, J.; Bennett, J. V.; Ber 更多
作者机构:[Ablikim, M.; An, F. F.; Bai, J. Z.; Cai, X.; Cao, G. F.; Chang, J. F.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, Y. B.; Chu, Y. P.; Dai, 更多
通讯作者:Ablikim, M
通讯作者地址:[Ablikim, M]Inst High Energy Phys, Beijing 100049, Peoples R China.
来源:PHYSICAL REVIEW D
出版年:2012
卷:86
期:7
DOI:10.1103/PhysRevD.86.072011
摘要:Using (106 +/- 4) x 10(6) psi ' events accumulated with the BESIII detector at the BEPCII e(+)e(-) collider, we present measurements of the branching fractions for psi' decays to K+K- pi(0) and K+K- eta. In these final states, the decay psi' -> K-2(*) (1430)(+) K- + 10(-5), is observed for the first time, and its branching fraction is measured to be (7.12 +/- 0: 62(stat)(-0.61)(+1.13) (syst)) x 10(-5), which indicates a violation of the helicity selection rule in psi' decays. The branching fractions of psi' -> K* (892)(+) K- + c.c., phi eta, and phi pi(0) are also measured. The measurements are used to test the QCD predictions on charmonium decays.
收录类别:SCIE
WOS核心被引频次:2
资源类型:期刊论文
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