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

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	Chen, HT; Chen, YQ; Sang, WL; Chen, HT (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China.
	Relativistic corrections to the semi-inclusive decay of psi and gamma
发表期刊	PHYSICAL REVIEW D
语种	英语
关键词	Quarkonium Decay Heavy Quarkonium Annihilation Upsilon Quarks Qcd
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.
	2012
ISSN	1550-7998
卷号	85 期号:3 页码:34017
学科领域	Physics
收录类别	SCI
项目资助者	NSFC [10875156]; National Natural Science Foundation of China [10875130, 10935012]; NRF of Korea; MEST [2011-0003023] ; NSFC [10875156]; National Natural Science Foundation of China [10875130, 10935012]; NRF of Korea; MEST [2011-0003023] ; NSFC [10875156]; National Natural Science Foundation of China [10875130, 10935012]; NRF of Korea; MEST [2011-0003023] ; NSFC [10875156]; National Natural Science Foundation of China [10875130, 10935012]; NRF of Korea; MEST [2011-0003023]
引用统计
文献类型	期刊论文
条目标识符	http://ir.itp.ac.cn/handle/311006/15162
专题	理论物理所科研产出_SCI论文
通讯作者	Chen, HT (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China.
推荐引用方式 GB/T 7714	Chen, HT,Chen, YQ,Sang, WL,et al. Relativistic corrections to the semi-inclusive decay of psi and gamma[J]. PHYSICAL REVIEW D,2012,85(3):34017.
APA	Chen, HT,Chen, YQ,Sang, WL,&Chen, HT .(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.

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