Charmonium systems after the deconfinement transition

The behaviour of charmonia after the deconfinement transition is investigated on quenched lattices. Analysis of temporal correlators on fine lattices at temperatures up to 3 T-c show that the J/psi and eta(c) survive the deconfinement transition with little significant changes, and survive as bound states at least up to 2.25 T-c. The spatially excited chi(ci) states suffer serious system modifications, and perhaps dissolution, already a little above T-c.