| Abstract: | The study of quarkonium polarization at hadron colliders represents an important test of the production models. Recent results,
obtained at CDF, are in striking disagreement with NRQCD predictions, although such a model correctly reproduces the production
cross sections. Furthermore, in nucleus-nucleus collisions, the observed degree of polarization may be related to the characteristics
of deconfined matter. Because of these interesting features, quarkonium polarization will surely represent an interesting
observable at LHC energies. In ALICE, the polarization of the Ω and Γ states can be measured in the dilepton channel, both in the central barrel and in the forward (2.5<y<4) muon arm. We present
the results of a feasibility study, relative to the muon channel, concerning p-p and Pb-Pb collisions, showing the expected
performance for the measurement of J/Ω and Γ polarization, both as a function of transverse momentum and centrality. |
