https://doi.org/10.1051/epjconf/201817114005
Baryons in the plasma: In-medium effects and parity doubling
1
Department of Physics, College of Science, Swansea University, Swansea SA2 8PP, United Kingdom
2
Institute for Theoretical Physics, ETH Zürich, CH-8093 Zürich, Switzerland
3
Department of Theoretical Physics, National University of Ireland Maynooth, County Kildare, Ireland 4
4
School of Mathematics, Trinity College Dublin, Dublin 2, Ireland
* Speaker, e-mail: g.aarts@swan.ac.uk
Published online: 2 February 2018
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 FASTSUManisotropic Nf = 2+1 ensembles. In the confined phase a strong temperature dependence is seen in the masses of the negative-parity groundstates, while the positiveparity 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 negativeparity states and speculate on the relevance for heavy-ion phenomenology via the hadron resonance gas.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
