Baryons in the plasma: In-medium effects and parity doubling
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: firstname.lastname@example.org
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
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