scholarly journals Single transverse-spin asymmetry and Sivers function in large momentum effective theory

2021 ◽  
Vol 103 (7) ◽  
Author(s):  
Xiangdong Ji ◽  
Yizhuang Liu ◽  
Andreas Schäfer ◽  
Feng Yuan
Keyword(s):  
Spin Asymmetry ◽  
Effective Theory ◽  
Transverse Spin ◽  
Large Momentum ◽  
Sivers Function

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 Feasibility Studies for Single Transverse-Spin Asymmetry Measurements at a Fixed-Target Experiment Using the LHC Proton and Lead Beams (AFTER@LHC)

2017 ◽  
Vol 58 (4) ◽  
Author(s):  
Daniel Kikoła ◽  
Miguel García Echevarria ◽  
Cynthia Hadjidakis ◽  
Jean-Philippe Lansberg ◽  
Cédric Lorcé ◽  
...  
Keyword(s):  
Spin Asymmetry ◽  
Feasibility Studies ◽  
Transverse Spin ◽  
Fixed Target ◽  
Target Experiment ◽  
Fixed Target Experiment

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

scholarly journals Single transverse-spin asymmetry in Drell-Yan production at large and moderate transverse momentum

2006 ◽  
Vol 73 (9) ◽  
Author(s):  
Xiangdong Ji ◽  
Jian-Wei Qiu ◽  
Werner Vogelsang ◽  
Feng Yuan
Keyword(s):  
Transverse Momentum ◽  
Spin Asymmetry ◽  
Transverse Spin
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