| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8189947 | Physics Letters B | 2012 | 5 Pages |
Abstract
The protonʼs transverse polarization structure is examined in terms of the Lorentz-covariant Pauli-Lubanski vector in QCD. We find that there are contributions from leading, subleading, and next-to-subleading partonic contributions in the light-front system of coordinates. The subleading and next-to-subleading contributions are related to the leading one through Lorentz symmetry. And the leading contribution obeys a simple partonic angular momentum sum rule that gives a clear physical interpretation to a relation known previously.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Xiangdong Ji, Xiaonu Xiong, Feng Yuan,