Polarized structure function g(2)(x) in the chiral quark soliton model

摘要

The spin-dependent structure function g(2)(x, Q(2)) is investigated within the framework of the chiral quark soliton model. It turns out that the twist-3 part of g(2)(x, Q(2)) gives nonnegligible contributions to the total distributions at the energy scale of Q(2) = 5 GeV2 but mainly in the smaller x region only, so that the corresponding third moments integral(0)(1) x(2) (g) over bar(2)(x, Q(2)) dx are pretty small for both of the proton and neutron in conformity with the recent E155 data. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 35]