Freeze-out conditions from strangeness observables at RHIC

Freeze-out conditions from strangeness observables at RHIC

Abstract We determine chemical freeze-out conditions from strangeness observables measured at RHIC beam energies. Based on a combined analysis of lowest-order net-kaon fluctuations and strange anti-baryon over baryon yield ratios we obtain visibly enhanced freeze-out conditions at high beam energies...

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Main Authors: Marcus Bluhm, Marlene Nahrgang
Format: Article
Language:English
Published: SpringerOpen 2019-02-01
Series:European Physical Journal C: Particles and Fields
Online Access:http://link.springer.com/article/10.1140/epjc/s10052-019-6661-3
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spelling doaj-546386ed1e814e4ea4f55df2947a476a2020-11-25T03:08:27ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522019-02-017921610.1140/epjc/s10052-019-6661-3Freeze-out conditions from strangeness observables at RHICMarcus Bluhm0Marlene Nahrgang1Institute of Theoretical Physics, University of WrocławSUBATECH UMR 6457 (IMT Atlantique, Université de Nantes, IN2P3/CNRS)Abstract We determine chemical freeze-out conditions from strangeness observables measured at RHIC beam energies. Based on a combined analysis of lowest-order net-kaon fluctuations and strange anti-baryon over baryon yield ratios we obtain visibly enhanced freeze-out conditions at high beam energies compared to previous studies which analyzed net-proton and net-charge fluctuations. Our findings are in qualitative agreement with the recent study (Bellwied et al. in arXiv:1805.00088 [hep-ph], 2018) which utilizes the net-kaon fluctuation data in combination with information from lattice QCD. Our complementary approach shows that also strange hadron yield ratios are described by such enhanced freeze-out conditions.http://link.springer.com/article/10.1140/epjc/s10052-019-6661-3
collection DOAJ
language English
format Article
sources DOAJ
author Marcus Bluhm
Marlene Nahrgang
spellingShingle Marcus Bluhm
Marlene Nahrgang
Freeze-out conditions from strangeness observables at RHIC
European Physical Journal C: Particles and Fields
author_facet Marcus Bluhm
Marlene Nahrgang
author_sort Marcus Bluhm
title Freeze-out conditions from strangeness observables at RHIC
title_short Freeze-out conditions from strangeness observables at RHIC
title_full Freeze-out conditions from strangeness observables at RHIC
title_fullStr Freeze-out conditions from strangeness observables at RHIC
title_full_unstemmed Freeze-out conditions from strangeness observables at RHIC
title_sort freeze-out conditions from strangeness observables at rhic
publisher SpringerOpen
series European Physical Journal C: Particles and Fields
issn 1434-6044
1434-6052
publishDate 2019-02-01
description Abstract We determine chemical freeze-out conditions from strangeness observables measured at RHIC beam energies. Based on a combined analysis of lowest-order net-kaon fluctuations and strange anti-baryon over baryon yield ratios we obtain visibly enhanced freeze-out conditions at high beam energies compared to previous studies which analyzed net-proton and net-charge fluctuations. Our findings are in qualitative agreement with the recent study (Bellwied et al. in arXiv:1805.00088 [hep-ph], 2018) which utilizes the net-kaon fluctuation data in combination with information from lattice QCD. Our complementary approach shows that also strange hadron yield ratios are described by such enhanced freeze-out conditions.
url http://link.springer.com/article/10.1140/epjc/s10052-019-6661-3
work_keys_str_mv AT marcusbluhm freezeoutconditionsfromstrangenessobservablesatrhic
AT marlenenahrgang freezeoutconditionsfromstrangenessobservablesatrhic
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