p(p)over-bar final state interaction in J/psi -> gamma p(p)over-tilde

doi:10.1088/1674-1137/36/5/004

	p(p)over-bar final state interaction in J/psi -> gamma p(p)over-tilde
	Zeng Zhuo-Quan 1; Guo Xin-Heng 1,2; Shen Peng-Nian 2,3,4,5; Ding Yi-Bing 3,4
刊名	CHINESE PHYSICS C
	2012-05-01
卷号	36 页码:399-402
关键词	Near-threshold Enhancement Final State Interaction One Pion Exchange Potential Jost Function
ISSN号	1674-1137
DOI	10.1088/1674-1137/36/5/004
文献子类	Article
英文摘要	The phenomenon of the near p (p) over bar -threshold enhancement observed in the J/psi -> gamma p (p) over bar decay is studied by using the enhancement factor method with a simpler one-pion-exchange potential between p and (p) over bar. The Jost function caused by the mentioned potential is perturbatively calculated in the zero-th order approximation, and the corresponding enhancement. factor is obtained. It is found that such a final state interaction offers an important contribution to the decay width near the p (p) over bar -threshold, although it is not large enough. To explain the decay data, a phenomenological factor G(p) with the form of 285500/(m(pi)(2) + p(2)) should be introduced. A further calculation including the p-dependent bare T-matrix, a more realistic N (N) over bar potential and the contribution from the higher-order wave functions would provide a better understanding of the decay data and even the existence of the baryonium p (p) over bar. The near p (p) over bar -threshold behavior of the decay width in the J/psi -> pi(0) p (p) over bar process is also discussed.
资助项目	Chinese Academy of Sciences[KJCX3-SYW-N2]
WOS关键词	THRESHOLD ENHANCEMENT
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000303781900004
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/47829]
专题	中国科学院近代物理研究所
通讯作者	Zeng Zhuo-Quan
作者单位	1.Beijing Normal Univ, Coll Nucl Sci & Technol, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Grad Univ, Coll Phys Sci, Beijing 100049, Peoples R China 4.Guangxi Normal Univ, Coll Phys & Technol, Guilin 541004, Peoples R China 5.Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zeng Zhuo-Quan,Guo Xin-Heng,Shen Peng-Nian,et al. p(p)over-bar final state interaction in J/psi -> gamma p(p)over-tilde[J]. CHINESE PHYSICS C,2012,36:399-402.
APA	Zeng Zhuo-Quan,Guo Xin-Heng,Shen Peng-Nian,&Ding Yi-Bing.(2012).p(p)over-bar final state interaction in J/psi -> gamma p(p)over-tilde.CHINESE PHYSICS C,36,399-402.
MLA	Zeng Zhuo-Quan,et al."p(p)over-bar final state interaction in J/psi -> gamma p(p)over-tilde".CHINESE PHYSICS C 36(2012):399-402.