R. Mertig et Wl. Vanneerven, ORDER ALPHA(S) QCD CORRECTIONS TO THE BURKHARDT-COTTINGHAM SUM-RULE, Zeitschrift fur Physik. C, Particles and fields, 60(3), 1993, pp. 489-495
We have computed the O(alpha(s)) QCD corrections to the transverse spi
n dependent structure function g2(c, Q2). The calculation reveals that
the Burkhardt-Cottingham sum rule is violated in first order of alpha
(s). This result contradicts earlier findings in the literature. Its i
mplication in the context of the operator product expansion and the ma
ss factorization will be discussed.