Baryons in the plasma: in-medium effects and parity doubling

Gert Aarts, Chris Allton, Davide de Boni, Simon Hands, Benjamin Jäger, Chrisanthi Praki, Jon-Ivar Skullerud

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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.
Original languageEnglish
Article number14005
JournalE P J Web of Conferences
Number of pages4
Publication statusPublished - 2. Feb 2018
Event17th International Conference on Strangeness in Quark Matter - Utrecht, Netherlands
Duration: 9. Jul 201715. Jul 2017
Conference number: 17


Conference17th International Conference on Strangeness in Quark Matter

Bibliographical note

4 pages, presented at Strangeness in Quark Matter, Utrecht, the Netherlands, 10-15 July 2017


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