Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-06-19
Phys.Lett. B408 (1997) 347-356
Physics
High Energy Physics
High Energy Physics - Phenomenology
Accepted for publication in Physics Letters B
Scientific paper
10.1016/S0370-2693(97)00771-5
In order to examine the validity of Wandzura-Wilczek relation for the polarized DIS structure function $g_2(x,Q^2)$, we use the light-front time-ordering pQCD to calculate $g_2(x,Q^2)$ at order $\alpha_s$ on a quark target. We find that the study of the transverse polarized structure function in pQCD is only meaningful if we begin with massive quarks. The result shows that the Wandzura-Wilczek relation for $g_2(x,Q^2)$ is strongly violated by the quark mass in pQCD.
Harindranath Avaroth
Zhang Wei-Min
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