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Hyperons in Thermal QCD from the Lattice

Gert Aarts Orcid Logo, Chris Allton Orcid Logo, Davide De Boni, Jonas Glesaaen Orcid Logo, Simon Hands, Benjamin Jäger, Jon-Ivar Skullerud

Springer Proceedings in Physics, Volume: 250, Pages: 29 - 35

Swansea University Authors: Gert Aarts Orcid Logo, Chris Allton Orcid Logo, Davide De Boni, Jonas Glesaaen Orcid Logo, Simon Hands

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DOI (Published version): 10.1007/978-3-030-53448-6_4

Abstract

We study the spectrum of light baryons and hyperons as a function of temperature using lattice gauge theory methods. We find that masses of positive parity states are temperature independent, within errors, in the hadronic phase. The negative parity states decrease in mass as the temperature increas...

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Published in: Springer Proceedings in Physics
ISBN: 9783030534479 9783030534486
ISSN: 0930-8989 1867-4941
Published: Cham Springer International Publishing 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa53124
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Abstract: We study the spectrum of light baryons and hyperons as a function of temperature using lattice gauge theory methods. We find that masses of positive parity states are temperature independent, within errors, in the hadronic phase. The negative parity states decrease in mass as the temperature increases. Above the deconfining temperature, lattice correlators and spectral functions show a degeneracy between parity sectors, i.e. parity doubling. We apply our findings to an in-medium Hadron Resonance Gas model. The techniques used in this study include direct analysis of the hadronic correlation functions, conventional fitting procedures, and the Maximum Entropy Method.
College: Faculty of Science and Engineering
Funders: We acknowledge PRACE for awarding us access to Marconi at CINECA, Italy. This work used the STFC DiRAC Blue Gene Q system at the University of Edinburgh, U.K. We have been supported by the STFC grant ST/P00055X/1, and the Swansea Academy for Advanced Computing.
Start Page: 29
End Page: 35

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