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QED contribution to the production of J/psi plus c(c)over-bar + X at the Tevatron and LHC
He ZG(何志国); Li R(李荣); Wang JX(王建雄); He, ZG; Li, R; Wang, JX
2009
发表期刊PHYSICAL REVIEW D
卷号79期号:9页码:94003
通讯作者[He, Zhi-Guo] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; CAS, China & Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
摘要We calculate alpha(2)alpha(2)(s) order QED contribution to J/psi production in the pp((p) over bar) -> J/psi + c (c) over bar color-singlet process at the Tevatron and LHC in the framework of nonrelativistic QCD. The contribution of the interference between the alpha 2 alpha(2)(s) QED and alpha(4)(s) QCD is also taken into account. The J/psi production associated with a charm-quark pair could be a measurable signal at hadron collider experiment. Our calculations show that by including the QED contribution, the p(t) distribution is enhanced by a factor of 1.5 (1.9) at the Tevatron (LHC) at p(t) 50(100) GeV. In addition, the polarization of J/psi turns from unpolarized in all regions to increasingly transverse when pt becomes larger.
文章类型Article
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.79.094003
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语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000266501800022
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被引频次:14[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/311005/240855
专题理论物理室
作者单位中国科学院高能物理研究所
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He ZG,Li R,Wang JX,et al. QED contribution to the production of J/psi plus c(c)over-bar + X at the Tevatron and LHC[J]. PHYSICAL REVIEW D,2009,79(9):94003.
APA 何志国,李荣,王建雄,He, ZG,Li, R,&Wang, JX.(2009).QED contribution to the production of J/psi plus c(c)over-bar + X at the Tevatron and LHC.PHYSICAL REVIEW D,79(9),94003.
MLA 何志国,et al."QED contribution to the production of J/psi plus c(c)over-bar + X at the Tevatron and LHC".PHYSICAL REVIEW D 79.9(2009):94003.
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