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Chen, HT; Chen, YQ![]() | |
Relativistic corrections to the semi-inclusive decay of psi and gamma | |
发表期刊 | PHYSICAL REVIEW D
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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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