J/psi+c+(c)over-bar photoproduction in e(+)e(-) scattering
Qiao, CF; Wang JX(王建雄); Wang, JX
刊名PHYSICAL REVIEW D
2004
卷号69期号:1页码:14015
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.69.014015
通讯作者CCAST, World Lab, Beijing 100080, Peoples R China ; Chinese Acad Sci, Grad Sch, Dept Phys, Beijing 100039, Peoples R China ; Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China
文章类型Article
英文摘要We investigate the J/psi+c+(c) over bar photoproduction in e(+)e(-) collision at CERN LEP II energies. The physical motivations for this study are the following: (1) such a process was not considered in previous investigations of J/psi photoproduction in e(+)e(-) interaction, and we show in this work that it is worthwhile to do so in order to make sound predictions for experimental comparison; (2) from recent Belle experiment results, the process with the same final states at the B factory has a theoretically yet unexplainable large fraction; hence it is interesting to see what may happen at other colliders; (3) the process can be measured with a high accuracy at the planned linear colliders; (4) it is necessary to take this process into consideration in elucidating the quarkonium production mechanism, especially in testing the universality of nonrelativistic QCD nonperturbative matrix elements. We find that the process concerned is really important at LEP experimental energies; within the theoretical uncertainties, it is of similar magnitude to the other color-singlet processes when the transverse momentum p(T)>1 GeV. Nevertheless, to explain the recent DELPHI experimental result, the color-octet mechanism is still necessary, but with a shrunken contribution compared to previous analysis. It is found that the J/psi+c+(c) over bar photoproduction process cannot be mimicked by the simple fragmentation scheme.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]Astronomy & Astrophysics ; Physics
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语种英语
WOS记录号WOS:000188785800036
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被引频次:15[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/311005/240433
专题中国科学院高能物理研究所_理论物理室_期刊论文
作者单位中国科学院高能物理研究所
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Qiao, CF,Wang JX,Wang, JX. J/psi+c+(c)over-bar photoproduction in e(+)e(-) scattering[J]. PHYSICAL REVIEW D,2004,69(1):14015.
APA Qiao, CF,王建雄,&Wang, JX.(2004).J/psi+c+(c)over-bar photoproduction in e(+)e(-) scattering.PHYSICAL REVIEW D,69(1),14015.
MLA Qiao, CF,et al."J/psi+c+(c)over-bar photoproduction in e(+)e(-) scattering".PHYSICAL REVIEW D 69.1(2004):14015.
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