Chromopolarizability and pi pi final state interaction

doi:10.1103/PhysRevD.74.014011

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	Chromopolarizability and pi pi final state interaction
	Guo FK(郭奉坤); Shen PN(沈彭年); Jiang HQ(姜焕清); Guo, FK; Shen, PN; Chiang, HC
	2006
发表期刊	PHYSICAL REVIEW D
卷号	74 期号:1 页码:14011
通讯作者	Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; CCAST, World Lab, Beijing 100080, Peoples R China ; SW Univ, Chongqing 400715, Peoples R China ; Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China ; Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
文章类型	Article
摘要	The chromopolarizability of a quarkonium state is a measure of the amplitude of the E1-E1 chromoelectric interaction of the quarkonium with soft gluon fields and can be measured in the heavy quarkonium decays. Based on the chiral unitary approach, formulas with modification caused by the S wave pi pi final state interaction (FSI) for measuring the chromopolarizabilities are given. It is shown that the effect of the S wave pi pi FSI is very important in extracting chromopolarizabilities from the experimental data. The resultant values with the FSI are reduced to about 1/3 of those determined without the FSI. The consequences of the FSI correction in the J/psi-nucleon scattering near the threshold are also discussed. The estimated lower bound of the total cross section is reduced from about 17 mb to 2.9 mb, which agrees with the experimental data point and is compatible with the previously estimated values in the literature. In order to understand the interaction of heavy quarkonia with light hadrons at low energies better and to obtain the chromopolarizabilities of quarkonia accurately, more data should be accumulated. This can be done in the J/psi ->pi(+)pi(-)l(+)l(-) decay at BES-III and CLEO-c and in the Upsilon ->pi(+)pi(-)l(+)l(-) decay at B factories.
学科领域	Astronomy & Astrophysics; Physics
研究领域[WOS]	Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
DOI	10.1103/PhysRevD.74.014011
URL	查看原文
语种	英语
研究领域[WOS]	Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
WOS类目	Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号	WOS:000239511800040
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ihep.ac.cn/handle/311005/240424
专题	理论物理室
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Guo FK,Shen PN,Jiang HQ,et al. Chromopolarizability and pi pi final state interaction[J]. PHYSICAL REVIEW D,2006,74(1):14011.
APA	郭奉坤,沈彭年,姜焕清,Guo, FK,Shen, PN,&Chiang, HC.(2006).Chromopolarizability and pi pi final state interaction.PHYSICAL REVIEW D,74(1),14011.
MLA	郭奉坤,et al."Chromopolarizability and pi pi final state interaction".PHYSICAL REVIEW D 74.1(2006):14011.

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