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题名: QCD corrections to gamma production via color-octet states at the Tevatron and LHC
作者: Gong, B ;  Wang, JX ;  Zhang, HF
刊名: PHYSICAL REVIEW D
出版日期: 2011
卷号: 83, 期号:11, 页码:114021
关键词: TO-LEADING-ORDER ;  J/PSI ;  COLLISIONS ;  HADROPRODUCTION ;  ASSOCIATION ;  QUARKONIUM ;  COLLIDERS
学科分类: Physics
通讯作者: Gong, B (reprint author), CAS, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China.
部门归属: [Gong, Bin; Wang, Jian-Xiong; Zhang, Hong-Fei] CAS, Inst High Energy Phys, Beijing 100049, Peoples R China; [Gong, Bin] CAS, Inst Theoret Phys, Beijing 100190, Peoples R China; [Gong, Bin; Wang, Jian-Xiong; Zhang, Hong-Fei] CAS, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
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.
资助者: National Natural Science Foundation of China [10475083, 10979056, 10935012, 11005137]; Chinese Academy of Science [INFO-115-B01]; China Postdoctoral Science Foundation [20090460535]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000291434800001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14338
Appears in Collections:理论物理所2011年知识产出_期刊论文

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Recommended Citation:
Gong, B,Wang, JX,Zhang, HF. QCD corrections to gamma production via color-octet states at the Tevatron and LHC[J]. PHYSICAL REVIEW D,2011,83(11):114021.
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