Quark and Gluon Angular Momentum in the Nucleon

被引：0
|
作者：
Burkardt, Matthias [1 ]
BC, Hikmat [1 ]
Jarrah, Abdullah [1 ]
机构：
[1] New Mexico State Univ, Las Cruces, NM 88003 USA
来源：
12TH INTERNATIONAL CONFERENCE ON MESON-NUCLEON PHYSICS AND THE STRUCTURE OF THE NUCLEON (MENU 2010) | 2011年 / 1374卷
关键词：
GENERALIZED PARTON DISTRIBUTIONS; IMPACT PARAMETER SPACE; SPIN; PROTON; SCATTERING; MODEL; HADRONS; G1;
D O I：
10.1063/1.3647096
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Parton distributions in impact parameter space, which are obtained by Fourier transforming GPDs, are exhibit a significant deviation from axial symmetry when the target and/or quark is transversely polarized. From this deformation, we present an intuitive derivation of the Ji relation. In a scalar diquark model and in QED, we compare the Ji and Jaffe-Manohar decompositions of the nucleon spin. Using the MIT bag model, we estimate spectator effects through the presence of the gluon vector potential in the definitions of the quark orbital angular momentum.
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页数：8
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