Medium effects and parity doubling of hyperons across the deconfinement phase transition*
We analyse the behaviour of hyperons with strangeness S = –1,–2,–3 in the hadronic and quark gluon plasma phases, with particular interest in parity doubling and its emergence as the temperature grows. This study uses our FASTSUM anisotropic Nf = 2+1 ensembles, with four temperatures below and four...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2018-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://doi.org/10.1051/epjconf/201817507016 |
| _version_ | 1818594761840263168 |
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| author | Aarts Gert Allton Chris Boni Davide De Hands Simon Jäger Benjamin Praki Chrisanthi Skullerud Jon-Ivar |
| author_facet | Aarts Gert Allton Chris Boni Davide De Hands Simon Jäger Benjamin Praki Chrisanthi Skullerud Jon-Ivar |
| author_sort | Aarts Gert |
| collection | DOAJ |
| description | We analyse the behaviour of hyperons with strangeness S = –1,–2,–3 in the hadronic and quark gluon plasma phases, with particular interest in parity doubling and its emergence as the temperature grows. This study uses our FASTSUM anisotropic Nf = 2+1 ensembles, with four temperatures below and four above the deconfinement transition temperature, Tc. The positive-parity groundstate masses are found to be largely temperature independent below Tc, whereas the negative-parity ones decrease considerably as the temperature increases. Close to the transition, the masses are almost degenerate, in line with the expectation from chiral symmetry restoration. This may be of interest for heavy-ion phenomenology. In particular we show an application of this effect to the Hadron Resonance Gas model. A clear signal of parity doubling is found above Tc in all hyperon channels, with the strength of the effect depending on the number of s-quarks in the baryons. |
| first_indexed | 2024-12-16T11:05:16Z |
| format | Article |
| id | doaj.art-37139bc367fd4c949b8dcfa5f1c6747e |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-16T11:05:16Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-37139bc367fd4c949b8dcfa5f1c6747e2022-12-21T22:33:52ZengEDP SciencesEPJ Web of Conferences2100-014X2018-01-011750701610.1051/epjconf/201817507016epjconf_lattice2018_07016Medium effects and parity doubling of hyperons across the deconfinement phase transition*Aarts GertAllton ChrisBoni Davide DeHands SimonJäger BenjaminPraki ChrisanthiSkullerud Jon-IvarWe analyse the behaviour of hyperons with strangeness S = –1,–2,–3 in the hadronic and quark gluon plasma phases, with particular interest in parity doubling and its emergence as the temperature grows. This study uses our FASTSUM anisotropic Nf = 2+1 ensembles, with four temperatures below and four above the deconfinement transition temperature, Tc. The positive-parity groundstate masses are found to be largely temperature independent below Tc, whereas the negative-parity ones decrease considerably as the temperature increases. Close to the transition, the masses are almost degenerate, in line with the expectation from chiral symmetry restoration. This may be of interest for heavy-ion phenomenology. In particular we show an application of this effect to the Hadron Resonance Gas model. A clear signal of parity doubling is found above Tc in all hyperon channels, with the strength of the effect depending on the number of s-quarks in the baryons.https://doi.org/10.1051/epjconf/201817507016 |
| spellingShingle | Aarts Gert Allton Chris Boni Davide De Hands Simon Jäger Benjamin Praki Chrisanthi Skullerud Jon-Ivar Medium effects and parity doubling of hyperons across the deconfinement phase transition* EPJ Web of Conferences |
| title | Medium effects and parity doubling of hyperons across the deconfinement phase transition* |
| title_full | Medium effects and parity doubling of hyperons across the deconfinement phase transition* |
| title_fullStr | Medium effects and parity doubling of hyperons across the deconfinement phase transition* |
| title_full_unstemmed | Medium effects and parity doubling of hyperons across the deconfinement phase transition* |
| title_short | Medium effects and parity doubling of hyperons across the deconfinement phase transition* |
| title_sort | medium effects and parity doubling of hyperons across the deconfinement phase transition |
| url | https://doi.org/10.1051/epjconf/201817507016 |
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