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
刊名PHYSICAL REVIEW D
2011
卷号83期号:11页码:114021
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.83.114021
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
文章类型Article
英文摘要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.
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:000291434800001
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240949
专题中国科学院高能物理研究所_理论物理室_期刊论文
中国科学院高能物理研究所_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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