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

Danish Institute for Advanced Study

Research output: Contribution to journal › Conference article › Research › 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.

Original language	English
Article number	14005
Journal	E P J Web of Conferences
Volume	171
Number of pages	4
ISSN	2100-014X
DOIs	https://doi.org/10.1051/epjconf/201817114005
Publication status	Published - 2. Feb 2018
Event	17th International Conference on Strangeness in Quark Matter - Utrecht, Netherlands Duration: 9. Jul 2017 → 15. Jul 2017 Conference number: 17

Conference

Conference	17th International Conference on Strangeness in Quark Matter
Number	17
Country/Territory	Netherlands
City	Utrecht
Period	09/07/2017 → 15/07/2017

Bibliographical note

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

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10.1051/epjconf/201817114005Licence: CC BY

1710.00566v1Submitted manuscript, 144 KB

Cite this

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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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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 Conferences

JF - EPJ Web Conferences

M1 - 14005

Y2 - 9 July 2017 through 15 July 2017

ER -

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

Abstract

Conference

Bibliographical note

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