scholarly journals Understanding the role of Cahn and Sivers effects in Deep Inelastic Scattering

Author(s):  
M. Anselmino
2005 ◽  
Vol 71 (7) ◽  
Author(s):  
M. Anselmino ◽  
M. Boglione ◽  
U. D’Alesio ◽  
A. Kotzinian ◽  
F. Murgia ◽  
...  

2003 ◽  
Vol 67 (7) ◽  
Author(s):  
Elliot Leader ◽  
Aleksander V. Sidorov ◽  
Dimiter B. Stamenov

1992 ◽  
Vol 07 (24) ◽  
pp. 6039-6051 ◽  
Author(s):  
STEVEN D. BASS

We discuss the polarized photon structure function [Formula: see text] and focus on the first moment of [Formula: see text], where we explore the role of the axial QED and strong U(1) anomalies. Electromagnetic gauge invariance determines an exact sum rule for the first moment of [Formula: see text]. If we accept a recently proposed definition of “spin content” then we must also accept a polarized gluon component of Δgγ=2π/αs in the spin-one photon.


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