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Light baryons below and above the deconfinement transition: medium effects and parity doubling

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

Journal of High Energy Physics, Volume: 2017, Issue: 6, Pages: 1 - 30

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

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DOI (Published version): 10.1007/jhep06(2017)034

Abstract

We study what happens to the N , Δ and Ω baryons in the hadronic gas and the quark-gluon plasma, with particular interest in parity doubling and its emergence as the plasma is heated. This is done using simulations of lattice QCD, employing the FASTSUM anisotropic Nf = 2 + 1 ensembles, with four tem...

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Published in: Journal of High Energy Physics
ISSN: 1029-8479
Published: Springer Science and Business Media LLC 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa34210
first_indexed 2017-07-21T15:19:31Z
last_indexed 2020-07-29T18:52:48Z
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spelling 2020-07-29T14:01:41.1175810 v2 34210 2017-06-08 Light baryons below and above the deconfinement transition: medium effects and parity doubling 1ba0dad382dfe18348ec32fc65f3f3de 0000-0002-6038-3782 Gert Aarts Gert Aarts true false de706a260fa1e1e47430693e135f41c7 0000-0003-0795-124X Chris Allton Chris Allton true false 7526a40d13a3c8f6c6a27d0e6f10ef5c Davide De Boni Davide De Boni true false b34293f7370adc1d2cac9b93717a61c7 Simon Hands Simon Hands true false 2017-06-08 BGPS We study what happens to the N , Δ and Ω baryons in the hadronic gas and the quark-gluon plasma, with particular interest in parity doubling and its emergence as the plasma is heated. This is done using simulations of lattice QCD, employing the FASTSUM anisotropic Nf = 2 + 1 ensembles, with four temperatures below and four above the deconfinement transition temperature. Below Tc we find that the positive-parity groundstate masses are largely temperature independent, whereas the negative-parity ones are reduced considerably as the temperature increases. This may be of interest for heavy-ion phenomenology. Close to the transition, the masses are nearly degenerate, in line with the expectation from chiral symmetry restoration. Above Tc we find a clear signal of parity doubling in all three channels, with the effect of the heavier s quark visible. Journal Article Journal of High Energy Physics 2017 6 1 30 Springer Science and Business Media LLC 1029-8479 Lattice Quantum Field Theory, Phase Diagram of QCD, Quark-Gluon Plasma, Thermal Field Theory 7 6 2017 2017-06-07 10.1007/jhep06(2017)034 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University 2020-07-29T14:01:41.1175810 2017-06-08T12:21:01.6582497 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Gert Aarts 0000-0002-6038-3782 1 Chris Allton 0000-0003-0795-124X 2 Davide De Boni 3 Simon Hands 4 Benjamin Jäger 5 Chrisanthi Praki 6 Jon-Ivar Skullerud 7 0034210-26072017163048.pdf GA.JHEP06(2017)034.pdf 2017-07-26T16:30:48.7930000 Output 2126042 application/pdf Version of Record true Released under the terms of a Creative Commons Attribution License (CC-BY). true eng http://creativecommons.org/licenses/by/4.0/
title Light baryons below and above the deconfinement transition: medium effects and parity doubling
spellingShingle Light baryons below and above the deconfinement transition: medium effects and parity doubling
Gert Aarts
Chris Allton
Davide De Boni
Simon Hands
title_short Light baryons below and above the deconfinement transition: medium effects and parity doubling
title_full Light baryons below and above the deconfinement transition: medium effects and parity doubling
title_fullStr Light baryons below and above the deconfinement transition: medium effects and parity doubling
title_full_unstemmed Light baryons below and above the deconfinement transition: medium effects and parity doubling
title_sort Light baryons below and above the deconfinement transition: medium effects and parity doubling
author_id_str_mv 1ba0dad382dfe18348ec32fc65f3f3de
de706a260fa1e1e47430693e135f41c7
7526a40d13a3c8f6c6a27d0e6f10ef5c
b34293f7370adc1d2cac9b93717a61c7
author_id_fullname_str_mv 1ba0dad382dfe18348ec32fc65f3f3de_***_Gert Aarts
de706a260fa1e1e47430693e135f41c7_***_Chris Allton
7526a40d13a3c8f6c6a27d0e6f10ef5c_***_Davide De Boni
b34293f7370adc1d2cac9b93717a61c7_***_Simon Hands
author Gert Aarts
Chris Allton
Davide De Boni
Simon Hands
author2 Gert Aarts
Chris Allton
Davide De Boni
Simon Hands
Benjamin Jäger
Chrisanthi Praki
Jon-Ivar Skullerud
format Journal article
container_title Journal of High Energy Physics
container_volume 2017
container_issue 6
container_start_page 1
publishDate 2017
institution Swansea University
issn 1029-8479
doi_str_mv 10.1007/jhep06(2017)034
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
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hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 1
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description We study what happens to the N , Δ and Ω baryons in the hadronic gas and the quark-gluon plasma, with particular interest in parity doubling and its emergence as the plasma is heated. This is done using simulations of lattice QCD, employing the FASTSUM anisotropic Nf = 2 + 1 ensembles, with four temperatures below and four above the deconfinement transition temperature. Below Tc we find that the positive-parity groundstate masses are largely temperature independent, whereas the negative-parity ones are reduced considerably as the temperature increases. This may be of interest for heavy-ion phenomenology. Close to the transition, the masses are nearly degenerate, in line with the expectation from chiral symmetry restoration. Above Tc we find a clear signal of parity doubling in all three channels, with the effect of the heavier s quark visible.
published_date 2017-06-07T13:15:51Z
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