Generalized Parton Distributions, Deeply Virtual Compton Scattering and TMDs

被引：0

作者：

Burkardt, Matthias ^{[1
]}

机构：

[1] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA

来源：

INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS | 2009年 / 1182卷

关键词：

GPDs; SSAs; higher twist; SINGLE-SPIN ASYMMETRIES; INELASTIC-SCATTERING; QUANTUM CHROMODYNAMICS; POWER CORRECTIONS; DENSITIES;

D O I：

暂无

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Parton distributions in impact parameter space, which are obtained by Fourier transforming GPDs, exhibit a significant deviation from axial symmetry when target and/or quark are transversely polarized. In combination with the final state interactions, this transverse deformation provides a natural mechanism for naive-T odd transverse single-spin asymmetries in semi-inclusive DIS. Under QCD evolution, long-range color correlations rapidly and hence this 'chromodynamic lensing mechanism' rapidly disappear. The deformation of PDFs in impact parameter space can also be related to the transverse force acting on the active quark in polarized DIS at higher twist.

引用

页码：859 / 863

页数：5

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