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arXiv · 1806.04499

Freeze-out conditions from strangeness observables at RHIC

Marcus Bluhm·Marlene Nahrgang
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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 [1] which utilizes the net-Kaon fluctuation data in combination with information from lattice QCD. Our complimentary approach shows that also strange hadron yield ratios are described by such enhanced freeze-out conditions.

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Marcus Bluhm, Marlene Nahrgang. 2018-06-12. Freeze-out conditions from strangeness observables at RHIC. https://doi.org/10.1140/epjc%2Fs10052-019-6661-3

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