Next-to-leading-order QCD corrections to J/psi(Gamma) plus gamma production at the LHC | |
Li R(李荣); Wang JX(王建雄); Li, R; Wang, JX | |
刊名 | PHYSICS LETTERS B |
2009 | |
卷号 | 672期号:1页码:#REF! |
通讯作者 | Li, R (reprint author), Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China. |
英文摘要 | In this work, we calculate the next-to-leading-order (NLO) QCD corrections to the process p + p -> J/psi + gamma via the color-singlet mechanism at the LHC. The results show that the partial cross section (p(t)(J/psi) > 3 GeV and \y(J/psi.gamma)\ < 3) is enhanced by a factor of about 2.0. and the differential cross section can be enhanced by two orders of magnitude in the large transverse momentum region of J/psi. Furthermore, the polarization of J/psi changes front transverse polarization at leading-order to longitudinal polarization at NLO. For the inclusive J/psi hadroproduction, it is known that the coloroctet contributions are one order of magnitude larger than the color-singlet contribution, and the polarization distribution is dominated by the color-octet behavior at NLO. In contrast, for J/psi + gamma production the color-singlet contribution is of the same order as the color-octet contribution, and the polarization distribution arises from both the color-singlet and color-octet. Therefore, measurements of J/psi production associated with a direct photon at the hadron collider could be an important supplement to testify the theoretical framework treating with the heavy quarkonium. In addition, an NLO QCD correction to Gamma + gamma production at the LHC is also presented in this Letter. (C) 2009 Elsevier B.V. All rights reserved. |
学科主题 | Physics |
类目[WOS] | Physics, Multidisciplinary |
收录类别 | SCI |
WOS记录号 | WOS:000263313500009 |
公开日期 | 2016-05-03 |
内容类型 | 期刊论文 |
源URL | [http://ir.ihep.ac.cn/handle/311005/225759] |
专题 | 高能物理研究所_理论物理室 |
推荐引用方式 GB/T 7714 | Li R,Wang JX,Li, R,et al. Next-to-leading-order QCD corrections to J/psi(Gamma) plus gamma production at the LHC[J]. PHYSICS LETTERS B,2009,672(1):#REF!. |
APA | 李荣,王建雄,Li, R,&Wang, JX.(2009).Next-to-leading-order QCD corrections to J/psi(Gamma) plus gamma production at the LHC.PHYSICS LETTERS B,672(1),#REF!. |
MLA | 李荣,et al."Next-to-leading-order QCD corrections to J/psi(Gamma) plus gamma production at the LHC".PHYSICS LETTERS B 672.1(2009):#REF!. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论