Quark Matter 2014 - XXIV International Conference on Ultrarelativistic Nucleus-Nucleus Collisions

19-24 May 2014
Europe/Zurich timezone

Charmonium suppression in a hot medium: melting vs absorption

20 May 2014, 10:00
20m

platinum

Contributed Talk Open Heavy Flavour and Quarkonia

Speaker

Boris Kopeliovich (UTFSM)

Description

A colorless $c\bar c$ dipole propagating through a hot medium can be dissolved either due to Debye screening of the binding potential, or by inelastic (color exchange) interaction with the medium, which turns the dipole into a color-octet state (absorption). Both mechanisms are included into the path-integral description of the in-medium propagation of the dipole, providing the real and imaginary parts of the light-cone potential respectively. We found that absorption, which is frequently forgotten, leads to a considerably stronger suppression of $J/\Psi$ production in heavy ion collisions, than the effect of Debye screening.

Primary author

Boris Kopeliovich (UTFSM)

Co-authors

Dr Irina Potashnikova (UTFSM) Prof. Ivan Schmidt (UTFSM) Dr Marat Siddikov (UTFSM)

Presentation Materials

 Transparents