A confinement model calculation of h1(x)

The transverse polarization distribution of quarks h1(x) is computed in a confinement model, the chiral chromodielectric model. The flavor structure of h1, its Q2 evolution and Sofferʹs inequality are studied. The Drell-Yan double transverse asymmetry ATT is evaluated and found to be one order of magnitude smaller than some previous estimates which equated it to the double longitudinal asymmetry.