Pv. Pobylitsa et Mv. Polyakov, New positivity bounds on polarized parton distributions in multicolored QCD - art. no. 097502, PHYS REV D, 6209(9), 2000, pp. 7502
We derive new positivity bounds on spin-dependent parton distributions in m
ulticolored QCD. They are stronger than the Soffer inequality. We check tha
t the new inequalities are stable under one-loop DGLAP evolution to higher
normalization points.