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题名: Study of electromagnetic decay of J/psi and psi
作者: Zhao, Qiang ;  Li, Gang ;  Chang, Chao-Hsi
刊名: PHYSICS LETTERS B
出版日期: 2007
卷号: 645, 期号:40942, 页码:173-179
关键词: RHO-PI PUZZLE ;  POSSIBLE EXPLANATION ;  MODEL
学科分类: Physics
通讯作者: Zhao, Q , Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
部门归属: Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China; Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: The electromagnetic decay contributions to J/ psi(psi') -> VP, where V and P stand for vector and pseudoscalar meson, respectively, are investigated in a vector meson dominance (VMD) model. We show that J/psi(psi) -> gamma* -> VP can be constrained well with the available experimental information. We find that this process has significant contributions in psi' -> VP and may play a key role in understanding the deviations from the so-called "12% rule" for the branching ratio fractions between psi -> VP and J/psi -> VP. We also address that the "12% rule" becomes very empirical in exclusive hadronic decay channels. (c) 2006 Elsevier B.V. All rights reserved.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5791
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Zhao, Qiang,Li, Gang,Chang, Chao-Hsi. Study of electromagnetic decay of J/psi and psi[J]. PHYSICS LETTERS B,2007,645(40942):173-179.
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