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

doi:10.1051/epjconf/201817114005

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

Publikation: Bidrag til tidsskrift › Konferenceartikel › Forskning › peer review

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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.

Originalsprog	Engelsk
Artikelnummer	14005
Tidsskrift	EPJ Web of Conferences
Vol/bind	171
Antal sider	4
ISSN	2100-014X
DOI	https://doi.org/10.1051/epjconf/201817114005
Status	Udgivet - 2. feb. 2018
Begivenhed	17th International Conference on Strangeness in Quark Matter - Utrecht, Holland Varighed: 9. jul. 2017 → 15. jul. 2017 Konferencens nummer: 17

Konference

Konference	17th International Conference on Strangeness in Quark Matter
Nummer	17
Land/Område	Holland
By	Utrecht
Periode	09/07/2017 → 15/07/2017

Bibliografisk note

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

Emneord

hep-lat
hep-ph
nucl-th

Dokumenter og links

10.1051/epjconf/201817114005Licens: CC BY

1710.00566v1Indsendt manuskript, 144 KB

Citationsformater

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title = "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 = "hep-lat, hep-ph, nucl-th",

author = "Gert Aarts and Chris Allton and Boni, {Davide de} and Simon Hands and Benjamin J{\"a}ger and Chrisanthi Praki and Jon-Ivar Skullerud",

note = "4 pages, presented at Strangeness in Quark Matter, Utrecht, the Netherlands, 10-15 July 2017; 17th International Conference on Strangeness in Quark Matter, SQM 2017 ; Conference date: 09-07-2017 Through 15-07-2017",

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T2 - 17th International Conference on Strangeness in Quark Matter

AU - Aarts, Gert

AU - Allton, Chris

AU - Boni, Davide de

AU - Hands, Simon

AU - Jäger, Benjamin

AU - Praki, Chrisanthi

AU - Skullerud, Jon-Ivar

N1 - Conference code: 17

PY - 2018/2/2

Y1 - 2018/2/2

N2 - 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.

AB - 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.

KW - hep-lat

KW - hep-ph

KW - nucl-th

U2 - 10.1051/epjconf/201817114005

DO - 10.1051/epjconf/201817114005

M3 - Conference article

SN - 2100-014X

VL - 171

JO - EPJ Web of Conferences

JF - EPJ Web of Conferences

M1 - 14005

Y2 - 9 July 2017 through 15 July 2017

ER -

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

Abstract

Konference

Bibliografisk note

Emneord

Dokumenter og links

Fingeraftryk

Citationsformater