On unique predictions for single spin azimuthal asymmetry

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	On unique predictions for single spin azimuthal asymmetry
	Wang, Q; Ma, JP; Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
刊名	EUROPEAN PHYSICAL JOURNAL C
	2004
卷号	37 期号:3 页码:293-298
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
ISSN号	1434-6044
英文摘要	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.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000224915100004
公开日期	2012-08-30
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/13985]
专题	理论物理研究所_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.
推荐引用方式 GB/T 7714	Wang, Q,Ma, JP,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	Wang, Q,Ma, JP,&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	Wang, Q,et al."On unique predictions for single spin azimuthal asymmetry".EUROPEAN PHYSICAL JOURNAL C 37.3(2004):293-298.