The transverse momentum dependence of anomalous Jψ suppression

In proton-nucleus and nucleus-nucleus collisions up to central S-U interactions, the PT-dependence of Jψ production is determined by initial state parton scattering and pre-resonance nuclear absorption (“normal” Jψ suppression). The “anomalous” Jψ suppression in PbPb collisions must reduce the normal PT broadening, since it occurs mainly in the central part of the interaction region, where also initial state parton scattering and nuclear absorption are strongest. We thus expect for 〈PT2〉 in PbPb collisions a turn-over and decrease with increasing ET.