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Next-to-leading-order QCD corrections to the yields and polarisations of J/psi and Gamma directly produced in association with a Z boson at the LHC
Gong B(龚斌); Gong, B; Lansberg, JP; Lorce, C; Wang, JX; Wang JX(王建雄)
2013
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号3页码:115
摘要We update the study of the production of direct J/psi in association with a Z boson at the Next-to-Leading Order (NLO) in alpha(s) by evaluating both the yield differential in P-T and the J/psi polarisation in the QCD-based Colour-Singlet Model (CSM). Contrary to an earlier claim, QCD corrections at small and mid P-T are small if one assumes that the factorisation and the renormalisation scales are commensurate with the Z boson mass. As it can be anticipated, the t-channel gluon-exchange (t-CGE) topologies start to be dominant only for P-T greater than or similar to m(Z)/2. The polarisation pattern is not altered by the QCD corrections. This is thus far the first quarkonium-production process where this is observed in the CSM. Along the same lines, our predictions for direct Gamma + Z are also given.
关键词QCD Phenomenology NLO Computations
学科领域Physics
DOI10.1007/JHEP03(2013)115
收录类别SCI
WOS记录号WOS:000317522400027
引用统计
被引频次:11[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/311005/224422
专题理论物理室
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Gong B,Gong, B,Lansberg, JP,et al. Next-to-leading-order QCD corrections to the yields and polarisations of J/psi and Gamma directly produced in association with a Z boson at the LHC[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(3):115.
APA 龚斌,Gong, B,Lansberg, JP,Lorce, C,Wang, JX,&王建雄.(2013).Next-to-leading-order QCD corrections to the yields and polarisations of J/psi and Gamma directly produced in association with a Z boson at the LHC.JOURNAL OF HIGH ENERGY PHYSICS(3),115.
MLA 龚斌,et al."Next-to-leading-order QCD corrections to the yields and polarisations of J/psi and Gamma directly produced in association with a Z boson at the LHC".JOURNAL OF HIGH ENERGY PHYSICS .3(2013):115.
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