Mott-Anderson freeze-out and the strange matter "horn"

Abstract

We discuss the $\sqrt{s}$-dependence of the $K^{+}/{\pi }^{+}$ ratio in heavy-ion collisions (the "horn" effect) within a Mott-Anderson localization model for chemical freeze-out. The different response of pion and kaon radii to the hot and dense hadronic medium results in different freeze-out conditions. We demonstrate within a simple model that this circumstance enhances the "horn" effect relative to statistical models with universal chemical freeze-out.

8 pages, 4 figures

References in corpus (1)

• Probing freeze-out conditions in heavy ion collisions with moments of charge fluctuations

Cited by in corpus (5)

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• Strange matter and kaon to pion ratio in SU(3) PNJL model
• Chiral phase transition and kaon-to-pion ratios in the entanglement SU(3) PNJL model