QCD corrections to gamma production via color-octet states at the Tevatron and LHC

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	QCD corrections to gamma production via color-octet states at the Tevatron and LHC
	Gong, B ; Wang, JX ; Zhang, HF
刊名	PHYSICAL REVIEW D
	2011
卷号	83 期号:11 页码:114021
关键词	TO-LEADING-ORDER J/PSI COLLISIONS HADROPRODUCTION ASSOCIATION QUARKONIUM COLLIDERS
ISSN号	1550-7998
通讯作者	Gong, B (reprint author), CAS, Inst High Energy Phys, POB 918 4, 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.
学科主题	Physics
收录类别	SCI
资助信息	National Natural Science Foundation of China [10475083, 10979056, 10935012, 11005137]; Chinese Academy of Science [INFO-115-B01]; China Postdoctoral Science Foundation [20090460535]
原文出处	http://dx.doi.org/10.1103/PhysRevD.83.114021
语种	英语
WOS记录号	WOS:000291434800001
公开日期	2013-05-17
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/14338]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	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.
APA	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	Gong, B,et al."QCD corrections to gamma production via color-octet states at the Tevatron and LHC".PHYSICAL REVIEW D 83.11(2011):114021.