J/$\psi$ absorption in a multicomponent hadron gas
Dariusz Prorok, Ludwik Turko, David Blaschke
TL;DR
This paper models anomalous $J/ extPsi$ suppression in high energy heavy ion collisions by considering inelastic scattering with a multicomponent hadronic gas, matching experimental data.
Contribution
It introduces a model of hadronic matter as an evolving multicomponent gas and compares its equation of state with Lattice QCD near the deconfinement transition.
Findings
The model reproduces observed $J/ extPsi$ suppression patterns.
The hadronic gas's sound velocity is estimated and compared with lattice data.
The cooling pattern from longitudinal expansion aligns with experimental results.
Abstract
A model for anomalous suppression in high energy heavy ion collisions is presented. As the additional suppression mechanism beyond standard nuclear absorption inelastic 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 suppression pattern agrees well with NA38 and NA50 data.
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