Abstract :
The spin-dependent structure function g2(x,Q2) is investigated within the framework of the chiral quark soliton model. It turns out that the twist-3 part of g2(x,Q2) gives nonnegligible contributions to the total distributions at the energy scale of Q2=5 GeV2 but mainly in the smaller x region only, so that the corresponding third moments ∫01 x2 ḡ2(x,Q2) dx are pretty small for both of the proton and neutron in conformity with the recent E155 data.
