Charmonium suppression in a hot medium: melting vs absorption

20 May 2014, 10:00
20m
platinum (darmstadtium)

platinum

darmstadtium

Schlossgraben 1 64283 Darmstadt Germany
Contributed Talk Open Heavy Flavour and Quarkonia Heavy flavor

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