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Relativistic corrections to the semi-inclusive decay of psi and gamma
Chen, HT; Chen, YQ; 桑文龙; Sang, WL
2012
发表期刊PHYSICAL REVIEW D
卷号85期号:3页码:34017
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.
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.85.034017
收录类别SCI
WOS记录号WOS:000300094600002
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被引频次:5[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/311005/224532
专题理论物理室
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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.
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