Abstract
We use up to fourth order cumulants of net strangeness fluctuations and their correlations with net baryon number fluctuations to extract information on the strange meson and baryon contribution to the low temperature hadron resonance gas, the dissolution of strange hadronic states in the crossover region of the QCD transition and the quasi-particle nature of strange quark contributions to the high temperature quark-gluon plasma phase.
Highlights
At RHIC and the LHC, quark gluon plasma is created by means of heavy ion collisions
[1] and experimentally verified [2] that many strange, anti-strange quarks are created during these collisions
To what extent the created fireball reaches chemical equilibrium before its hadronic freeze out — depending on collision energy and system size — is, still under debate. It is questionable whether strange hadrons freeze-out in the critical crossover region (T ≈ Tc) that is controlled by the light quark sector
Summary
At RHIC and the LHC, quark gluon plasma is created by means of heavy ion collisions. The initial conditions of such collisions are free of net strangeness.
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