# Quark Matter 2018

13-19 May 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

## Hadron gas with repulsive mean field

15 May 2018, 17:00
2h 40m
First floor and third floor (Palazzo del Casinò)

### Speaker

Pasi Huovinen (University of Wroclaw)

### Description

resonance gas model where the repulsive interactions between baryons
are modeled using the mean field approach.

We have shown [1] that repulsive interactions are especially important
when considering the higher order fluctuations. We now extend the
treatment of [1] to cover not only ground state baryons but heavier
resonances too, include the resonance states predicted by lattice
calculations and relativistic quark models. We evaluate both the
equation of state and the higher order fluctuations and correlations
of baryon number and strangenss, and compare the results with the most
recent lattice results. After fixing the magnitude of nucleon-nucleon
repulsion from the nucleon-nucleon scattering phase shift, we study
how different repulsion between ground state baryons and resonances on
one hand, and between strange and non-strange baryons on the other,
affect the EoS and fluctuations.

In fluid dynamical and hydrid calculations such a a constrained
extension of conventional hadron resonace gas model is important for
consistent matching of fluid with lattice QCD EoS to hadronic
ensembles.

[1] Huovinen and Petreczky, arXiv:1708.00879

Centralised submission by Collaboration Presenter name will be specified later Theory

### Primary authors

Pasi Huovinen (University of Wroclaw) Peter Petreczky (BNL)