J/$ψ$ absorption in a multicomponent hadron gas

Details J/$ψ$ absorption in a multicomponent hadron gas J/$ψ$ absorption in a multicomponent hadron gas

2008-08-04

arxiv.org/abs/0808.0358v1

AIP Conf.Proc.1038:73-82,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Presented at Joint Meeting Heidelberg-Liege-Paris-Wroclaw: Three Days of Strong Interactions and Astrophysics (HLPW08), Spa, L

Scientific paper

10.1063/1.2987189

A model for anomalous $J/\Psi$ suppression in high energy heavy ion collisions is presented. As the additional suppression mechanism beyond standard nuclear absorption inelastic $J/\Psi$ scattering with hadronic matter is considered. Hadronic matter is modeled as an evolving multi-component gas of point-like non-interacting particles (MCHG). Estimates for the sound velocity of the MCHG are given and the equation of state is compared with Lattice QCD data in the vicinity of the deconfinement phase transition. The approximate cooling pattern caused by longitudinal expansion is presented. It is shown that under these conditions the resulting $J/\Psi$ suppression pattern agrees well with NA38 and NA50 data.

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