Transverse Spin Structure Function g2(x, Q2 ) in the Valon model
  The spin dependent structure function, g2ww(x,Q^2), is calculated in the valon model. A simple approach is given for the determination of the twist-3 part of the g2(x, Q^2) in Mellin space; thus, enabling us to obtain the full transverse structure function, g2(x, Q^2) for proton, neutron and the deuteron. In light of the new data, we have further calculated the transversely polarized structure function of g23He(x, Q^2). Our results are checked against the experimental data and nice agreements are observed. 
Z. Alizadeh Yazdi, A. Tahamtan, F. Taghavi-Shahri, F. Arash and M.E.   Zomorrodian
hep-ph