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QCD corrections to gamma production via color-octet states at the Tevatron and LHC
Gong B(龚斌); Wang JX(王建雄); Zhang HF(张鸿飞); Gong, B; Wang, JX; Zhang, HF
2011
发表期刊PHYSICAL REVIEW D
卷号83期号:11页码:114021
通讯作者[Gong, Bin ; Wang, Jian-Xiong ; Zhang, Hong-Fei] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Gong, Bin] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China ; [Gong, Bin ; Wang, Jian-Xiong ; Zhang, Hong-Fei] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
摘要The next-to-leading order QCD corrections to gamma production via S-wave color-octet states gamma[S-1(0)(8), S-3(1)(8)] at the Tevatron and LHC is calculated. The K factors of total cross section ( ratio of next-to-leading order to leading order) are 1.313 and 1.379 for gamma[S-1(0)(8)] and gamma[S-3(1)(8)] at the Tevatron, while at the LHC they are 1.044 and 1.182, respectively. By fitting the experimental data from the CDF and D0, the matrix elements for S-wave color-octet states are obtained. And new predictions for gamma(1S) production are presented. The prediction for the polarization of inclusive gamma contains large uncertainty rising from the polarization of gamma(1S) from feed-down of chi(b). The production of gamma(3S) at the hadron colliders is also studied to avoid the large uncertainty mentioned above. To further clarify the situation, new measurements on the production and polarization for direct gamma(1S) and gamma(3S) are expected.
文章类型Article
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.83.114021
研究领域[WOS]Astronomy & Astrophysics ; Physics
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语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000291434800001
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被引频次:24[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/311005/240949
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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Gong B,Wang JX,Zhang HF,et al. QCD corrections to gamma production via color-octet states at the Tevatron and LHC[J]. PHYSICAL REVIEW D,2011,83(11):114021.
APA 龚斌,王建雄,张鸿飞,Gong, B,Wang, JX,&Zhang, HF.(2011).QCD corrections to gamma production via color-octet states at the Tevatron and LHC.PHYSICAL REVIEW D,83(11),114021.
MLA 龚斌,et al."QCD corrections to gamma production via color-octet states at the Tevatron and LHC".PHYSICAL REVIEW D 83.11(2011):114021.
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