J/psi weak decays in the covariant light-front quark model

	J/psi weak decays in the covariant light-front quark model
	Shen, YL; Wang YM(王玉明); Wang, YM
刊名	PHYSICAL REVIEW D
	2008
卷号	78 期号:7 页码:74012
通讯作者	[Shen, Yue-Long] Ocean Univ China, Coll Informat Sci & Engn, Qingdao 266003, Peoples R China ; [Wang, Yu-Ming] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
英文摘要	In the covariant light-front quark model, we study J/psi -> D((s)) transition form factors and utilize them to evaluate the branching fractions of various J/psi weak decay channels. For the Cabbibo allowed semileptonic decay modes J/psi -> D(s)l nu, the predicted branching ratios are at the order of 10(-10), which may be marginally measured at BESIII. The results for the semileptonic decay modes presented here are about 2-8 times larger than those calculated in the QCD sum rules approach, which is mainly due to the different treatment of nonperturbative QCD dynamics between these two approaches. Furthermore, we also give a rough estimation of the nonleptonic modes within the framework of the factorization approach, whose branching fraction numbers can be as large as 10(-9) and are consistent with that obtained in the QCD sum rules within the theoretical uncertainties.
学科主题	Astronomy & Astrophysics; Physics
类目[WOS]	Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]	Astronomy & Astrophysics ; Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000260574800048
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/240782]
专题	高能物理研究所_理论物理室高能物理研究所_计算中心
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	Shen, YL,Wang YM,Wang, YM. J/psi weak decays in the covariant light-front quark model[J]. PHYSICAL REVIEW D,2008,78(7):74012.
APA	Shen, YL,王玉明,&Wang, YM.(2008).J/psi weak decays in the covariant light-front quark model.PHYSICAL REVIEW D,78(7),74012.
MLA	Shen, YL,et al."J/psi weak decays in the covariant light-front quark model".PHYSICAL REVIEW D 78.7(2008):74012.