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On unique predictions for single spin azimuthal asymmetry
Ma, JP; Wang, Q; Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
2004
发表期刊EUROPEAN PHYSICAL JOURNAL C
ISSN1434-6044
卷号37期号:3页码:293-298
摘要Theoretically there are two approaches to predict single spin azimuthal asymmetries. One is to take transverse momenta of the partons into account by using transverse momentum dependent parton distributions, while another is to take asymmetries as twist-3 effects. The non-perturbative effects in these approaches are parameterized with different matrix elements, and predictions can be different. Recently, gauge invariant definitions of transverse momentum dependent parton distributions were derived. With these definitions it can be shown that there are relations between non-perturbative matrix elements in these two approaches. These relations may enable us to unify two approaches and to have unique predictions for single spin azimuthal asymmetries. In this letter we derive these relations by using time-reversal symmetry and show that even with these relations the single spin azimuthal asymmetry in a Drell-Yan process is predicted differently in different approaches.
部门归属Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Deep-inelastic Scattering Final-state Interactions Drell-yan Process Semiinclusive Pion Electroproduction Polarized Deuterium Target Chiral-odd Contribution Parton Distributions Fragmentation Function Hard-scattering Sivers Function
学科领域Physics
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收录类别SCI
WOS记录号WOS:000224915100004
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被引频次:34[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/311006/13985
专题理论物理所SCI论文
通讯作者Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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Ma, JP,Wang, Q,Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.. On unique predictions for single spin azimuthal asymmetry[J]. EUROPEAN PHYSICAL JOURNAL C,2004,37(3):293-298.
APA Ma, JP,Wang, Q,&Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2004).On unique predictions for single spin azimuthal asymmetry.EUROPEAN PHYSICAL JOURNAL C,37(3),293-298.
MLA Ma, JP,et al."On unique predictions for single spin azimuthal asymmetry".EUROPEAN PHYSICAL JOURNAL C 37.3(2004):293-298.
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