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Sang, WL; Feng, F; Chen, YQ; Feng, F (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Relativistic corrections to Gamma exclusive decay into double S-wave charmonia
Source PublicationPHYSICAL REVIEW D
Language英语
AbstractWithin the framework of nonrelativisitic QCD factorization formalism, we present the next-to-leadingorder relativistic corrections to Gamma exclusive decay into eta(c) plus J/psi. The double charmonia can be produced through several immediate channels, i.e., Gamma -> g*g*g* -> eta(c) + J/psi, g*g*gamma* -> eta(c) + J/psi, and Gamma -> gamma* -> eta(c) + J/psi. The amplitudes of these three channels are obtained accurate up to O(alpha(3)(s)v(2)), O(alpha alpha(s)(2)v(2)), and O(alpha alpha(2)(s)v(2)), respectively, where v indicates the typical heavy quark velocity in bottomonium and/or charmonium rest frame. The decay rates are also presented. We find that the next-to-leading-order relativistic corrections to the short-distance coefficients as well as the decay rates are both significant and negative, especially for the corrections from bottomonium. More seriously, the decay rates are even brought into negative by including the relativistic corrections, which indicates the poor convergence for the velocity expansion in this kind of process. Detailed analysis is given in the paper.
2015
Volume92Issue:1Pages:14025
Subject AreaAstronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1103/PhysRevD.92.014025
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China [11447031, 112755242] ; National Natural Science Foundation of China [11447031, 112755242] ; National Natural Science Foundation of China [11447031, 112755242] ; National Natural Science Foundation of China [11447031, 112755242] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics [Y4KF081CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics [Y4KF081CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics [Y4KF081CJ1] ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics [Y4KF081CJ1] ; Natural Science Foundation of ChongQing [cstc2014jcyjA00029] ; Natural Science Foundation of ChongQing [cstc2014jcyjA00029] ; Natural Science Foundation of ChongQing [cstc2014jcyjA00029] ; Natural Science Foundation of ChongQing [cstc2014jcyjA00029] ; Fundamental Research Funds for the Central Universities [SWU114003] ; Fundamental Research Funds for the Central Universities [SWU114003] ; Fundamental Research Funds for the Central Universities [SWU114003] ; Fundamental Research Funds for the Central Universities [SWU114003] ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/20920
Collection理论物理所科研产出_SCI论文
Corresponding AuthorFeng, F (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Sang, WL,Feng, F,Chen, YQ,et al. Relativistic corrections to Gamma exclusive decay into double S-wave charmonia[J]. PHYSICAL REVIEW D,2015,92(1):14025.
APA Sang, WL,Feng, F,Chen, YQ,&Feng, F .(2015).Relativistic corrections to Gamma exclusive decay into double S-wave charmonia.PHYSICAL REVIEW D,92(1),14025.
MLA Sang, WL,et al."Relativistic corrections to Gamma exclusive decay into double S-wave charmonia".PHYSICAL REVIEW D 92.1(2015):14025.
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