Quarkonium production through hard comover scattering. II. art. no. 114001

We extend to large transverse momentum p(perpendicular to) an approach to q uarkonium hadroproduction previously suggested for low p(perpendicular to). The dynamics involves a perturbative rescattering of the heavy quark pair off a comoving color field which originates from gluon radiation prior to t he heavy quark production vertex. Assuming simple properties of the comovin g held we find the rescattering scenario to be in reasonable agreement with data. At large p(perpendicular to), psi' is predicted to he unpolarized, a nd chi (1) production is favored compared to chi (2). We predict the chi (1 ) polarization to be transverse at low p(perpendicular to), and to get a lo ngitudinal component at large p(perpendicular to).