مدلهای پتانسیل quarkonium

Quarkonium Suppression

I discuss quarkonium suppression in equilibrated strongly interacting matter. After a brief review of basic features of quarkonium production I discuss the application of recent lattice data on the heavy quark potential to the problem of quarkonium dissociation as well as the problem of direct lattice determination of quarkonium properties in finite temperature lattice QCD.

Quarkonium Production

Molecular Quarkonium

It has been pointed out long time ago [1] that there should exist bound and/or resonant states of heavy hadrons, dubbed ‘molecular’ and arising due to the strong force between the light constituents of the heavy hadrons. Indeed, considering the interaction between a heavy meson, consisting of a heavy quark Q and a light antiquark q̄, and an antimeson (Q̄q), it is clear that there is a normal stro...

Heavy Quarkonium ∗

I review heavy quarkonium physics in view of recent experimental results. In particular, I discuss new results on spin singlet states, photon and hadronic transitions, D−states and discovery of yet unexplained narrow X(3872) state. 1 Quarkonia Quarkonium is a bound state of a quark and its anti-quark. Some properties of light and heavy quarkonia are compared to properties of positronium in Tabl...

Nuclear-bound quarkonium.

We show that the QCD van der Waals interaction due to multiple gluon exchange provides a new kind of attractive nuclear force capable of binding heavy quarkonia to nuclei. The parameters of the potential are estimated by identifying multi-gluon exchange with the pomeron contributions to elastic meson-nucleon scattering. The gluonic potential is then used to study the properties of CC nuclearbou...

Deconfinement and Quarkonium Suppression

Modifications in the production pattern of heavy quark bound states have long been considered to provide sensitive signatures for the thermal properties of dense matter created in heavy ion collisions. The original concept of Matsui and Satz for quarkonium suppression as signature for deconfinement in heavy ion collisions has been challenged recently through lattice studies of spectral function...