ON THE Q(2) DEPENDENCE OF THE MEASURED POLARIZED STRUCTURE FUNCTIONS

We analyse the available data on the polarized asymmetries A(1) for proton, neutron and deuteron targets. We use a homogeneous and updated set of unpolarized structure functions to derive g(1) from A(1), and we accurately correct for the scaling violations in order to obtain g(1)(x, Q(2)) with the same Q(2) for all x values. The contribution to the Q(2) evolution of a possible large gluon polarized density is also considered. The implications for the Ellis-Jaffe and for the Bjorken sum rules are discussed.