Baryons in the plasma: in-medium effects and parity doubling
Abstract
We investigate the fate of baryons made out of u, d and s quarks in the hadronic gas and the quark-gluon plasma, using nonperturbative lattice simulations, employing the FASTSUM anisotropic Nf=2+1 ensembles. In the confined phase a strong temperature dependence is seen in the masses of the negative-parity groundstates, while the positive-parity groundstate masses are approximately temperature independent, within the error. At high temperature parity doubling emerges. A noticeable effect of the heavier s quark is seen. We give a simple description of the medium-dependent masses for the negative-parity states and speculate on the relevance for heavy-ion phenomenology via the hadron resonance gas.
Keywords
Cite
@article{arxiv.1710.00566,
title = {Baryons in the plasma: in-medium effects and parity doubling},
author = {Gert Aarts and Chris Allton and Davide de Boni and Simon Hands and Benjamin Jäger and Chrisanthi Praki and Jon-Ivar Skullerud},
journal= {arXiv preprint arXiv:1710.00566},
year = {2018}
}
Comments
4 pages, presented at Strangeness in Quark Matter, Utrecht, the Netherlands, 10-15 July 2017