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题名: Relativistic corrections to the semi-inclusive decay of psi and gamma
作者: Chen, HT ;  Chen, YQ ;  Sang, WL
刊名: PHYSICAL REVIEW D
出版日期: 2012
卷号: 85, 期号:3, 页码:34017
关键词: QUARKONIUM DECAY ;  HEAVY QUARKONIUM ;  ANNIHILATION ;  UPSILON ;  QUARKS ;  QCD
学科分类: Physics
通讯作者: Chen, HT (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Chen, Hai-Ting; Chen, Yu-Qi] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Sang, Wen-Long] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China; [Sang, Wen-Long] Korea Univ, Dept Phys, Seoul 136701, South Korea
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.
资助者: NSFC [10875156]; National Natural Science Foundation of China [10875130, 10935012]; NRF of Korea; MEST [2011-0003023]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000300094600002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15162
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Chen, HT,Chen, YQ,Sang, WL. Relativistic corrections to the semi-inclusive decay of psi and gamma[J]. PHYSICAL REVIEW D,2012,85(3):34017.
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