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Partonic state and single transverse spin asymmetry in Drell-Yan process
Ma, J. P.; Sang, H. Z.; Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
2008
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
ISSN1126-6708
期号11页码:-
摘要Single transverse-spin asymmetries have been studied intensively both in experiment and theory. Theoretically, two factorization approaches have been proposed. One is by using transverse-momentum-dependent factorization and the asymmetry comes from the so called Sivers function. Another is by using collinear factorization where the non- perturbative effect is parameterized by a twist-3 hadronic matrix element. However, the factorized formulas for the asymmetries in the two approaches are derived at hadron level formally by diagram expansion, where one works with various part on density matrices of hadrons. If the two factorizations hold, they should also hold at parton level. We examine this for Drell-Yan processes by replacing hadrons with partons. By calculating the asymmetry, Sivers function and the twist-3 matrix element at nontrivial leading order of alpha(s), we find that we can reproduce the result of the transverse-momentum-dependent factorization. But we can only verify the result of the collinear factorization partly. Two formally derived relations between Sivers function and the twist-3 matrix element are also examined with negative results.
部门归属[Ma, JP; Sang, HZ] Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Deep-inelastic Scattering Semiinclusive Pion Electroproduction Polarized Deuterium Target To-back Jets Azimuthal Asymmetries Quark Polarization Cross-sections Fragmentation Function Hard Scattering Sivers Function
学科领域Physics
资助者National Nature Science Foundation of P.R.China[10721063, 10575126] ; National Nature Science Foundation of P.R.China[10721063, 10575126] ; National Nature Science Foundation of P.R.China[10721063, 10575126] ; National Nature Science Foundation of P.R.China[10721063, 10575126]
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收录类别SCI
资助者National Nature Science Foundation of P.R.China[10721063, 10575126] ; National Nature Science Foundation of P.R.China[10721063, 10575126] ; National Nature Science Foundation of P.R.China[10721063, 10575126] ; National Nature Science Foundation of P.R.China[10721063, 10575126]
WOS记录号WOS:000261315100090
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被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5446
专题理论物理所1978-2010年知识产出
通讯作者Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
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Ma, J. P.,Sang, H. Z.,Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. Partonic state and single transverse spin asymmetry in Drell-Yan process[J]. JOURNAL OF HIGH ENERGY PHYSICS,2008(11):-.
APA Ma, J. P.,Sang, H. Z.,&Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.(2008).Partonic state and single transverse spin asymmetry in Drell-Yan process.JOURNAL OF HIGH ENERGY PHYSICS(11),-.
MLA Ma, J. P.,et al."Partonic state and single transverse spin asymmetry in Drell-Yan process".JOURNAL OF HIGH ENERGY PHYSICS .11(2008):-.
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