Relativistic corrections to the semi-inclusive decay of psi and gamma

	Relativistic corrections to the semi-inclusive decay of psi and gamma
	Chen, HT; Chen, YQ; 桑文龙; Sang, WL
刊名	PHYSICAL REVIEW D
	2012
卷号	85 期号:3 页码:34017
英文摘要	In the framework of the nonrelativistic quantum chromodynamics factorization formalism, we study the processes of psi (nS) and gamma (nS) decay into a lepton pair or a charm pair associated with two jets up to the next-to-leading order in velocity expansion. We present the analytic expressions for the differential decay rate to the invariant mass of the lepton pair or charm pair. We find that the ratio of the next-to-leading order short-distance coefficient to the leading order one is in the range from -5: 5 to -12:4. The relativistic corrections are so large that they modify the leading order prediction significantly. Utilizing the analytic expressions, we also investigate the relativistic corrections in different kinematic regions and their dependence on the masses of the initial-state quarkonium and the final-state fermion. In addition, we study the momentum distribution of D+ in the process gamma(1S) -> c (c) over bar gg -> D+X.
学科主题	Astronomy & Astrophysics; Physics
收录类别	SCI
WOS记录号	WOS:000300094600002
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224532]
专题	高能物理研究所_理论物理室
推荐引用方式 GB/T 7714	Chen, HT,Chen, YQ,桑文龙； Sang, WL. Relativistic corrections to the semi-inclusive decay of psi and gamma[J]. PHYSICAL REVIEW D,2012,85(3):34017.
APA	Chen, HT,Chen, YQ,&桑文龙； Sang, WL.(2012).Relativistic corrections to the semi-inclusive decay of psi and gamma.PHYSICAL REVIEW D,85(3),34017.
MLA	Chen, HT,et al."Relativistic corrections to the semi-inclusive decay of psi and gamma".PHYSICAL REVIEW D 85.3(2012):34017.