Proton Spin Structure from Large Momentum Effective Theory

2017 ◽  
pp. 221-226
Author(s):  
Jian-Hui Zhang ◽  
Xiangdong Ji ◽  
Yong Zhao
Keyword(s):  
Spin Structure ◽  
Proton Spin ◽  
Effective Theory ◽  
Large Momentum ◽  
Proton Spin Structure

Proton Spin Structure from Large Momentum Effective Theory

2016 ◽  
Vol 57 (8) ◽  
pp. 615-620
Author(s):  
Jian-Hui Zhang ◽  
Xiangdong Ji ◽  
Yong Zhao
Keyword(s):  
Spin Structure ◽  
Proton Spin ◽  
Effective Theory ◽  
Large Momentum ◽  
Proton Spin Structure

scholarly journals The Spin Structure of the Nucleon

2016 ◽  
Vol 40 ◽  
pp. 1660001
Author(s):  
Xiangdong Ji ◽  
Yong Zhao
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
Proton Spin ◽  
Effective Theory ◽  
Large Momentum ◽  
Theory Approach ◽  
The One ◽  
The Relationship

We justify the physical meaning of the spin and orbital angular momentum of free partons in the infinite momentum frame, and discuss the relationship between the Jaffe-Manohar and Ji’s sum rules for proton spin. The parton orbital angular momentum in the Jaffe-Manohar sum rule can be measured through twist-three GPD’s in hard scattering processes such as deeply virtual Compton scattering. Furthermore, we propose that the paton orbital angular momentum as well as the gluon helicity can be calculated in lattice QCD through a large momentum effective theory approach, and provide all the one-loop matching conditions for the proton spin content in perturbative QCD.

scholarly journals Deep-Inelastice−pAsymmetry Measurements and Comparison with the Bjorken Sum Rule and Models of Proton Spin Structure

1978 ◽  
Vol 41 (2) ◽  
pp. 70-73 ◽  
Author(s):  
M. J. Alguard ◽  
W. W. Ash ◽  
G. Baum ◽  
M. R. Bergstrom ◽  
J. E. Clendenin ◽  
...  
Keyword(s):  
Spin Structure ◽  
Proton Spin ◽  
Sum Rule ◽  
Bjorken Sum Rule ◽  
Proton Spin Structure

scholarly journals Proton Spin Structure from Measurable Parton Distributions

2012 ◽  
Vol 109 (15) ◽  
Author(s):  
Xiangdong Ji ◽  
Xiaonu Xiong ◽  
Feng Yuan
Keyword(s):  
Spin Structure ◽  
Proton Spin ◽  
Parton Distributions ◽  
Proton Spin Structure
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