h1T⊥ and quark orbital angular momentum

被引：80
|
作者：
She, Jun [1 ]
Zhu, Jiacai
Ma, Bo-Qiang
机构：
[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
来源：
PHYSICAL REVIEW D | 2009年 / 79卷 / 05期
基金：
中国国家自然科学基金;
关键词：
MELOSH ROTATION; SPIN; NUCLEON; DISTRIBUTIONS; DIS;
D O I：
10.1103/PhysRevD.79.054008
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We calculate the pretzelosity distribution (h(1T)(perpendicular to)), which is one of the eight leading twist transverse momentum dependent parton distributions (TMDs), in the light-cone formalism. We find that this quantity has a simple relation with the quark orbital angular momentum distribution, thus it may provide a new possibility to access the quark orbital angular momentum inside the nucleon. The pretzelosity distribution can manifest itself through the sin(3 phi(h)-phi(S)) asymmetry in semi-inclusive deep inelastic scattering process. We calculate the sin(3 phi(h)-phi(S)) asymmetry at HERMES, COMPASS, and JLab kinematics and present our prediction on different targets including the proton, deuteron, and neutron targets. Inclusion of transverse momentum cut in data analysis could significantly enhance the sin(3 phi(h)-phi(S)) asymmetry for future measurements.
引用
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页数：10
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