Strangeness at finite temperature from Lattice QCD

Abstract

The precision reached by recent lattice QCD results allows for the first time to investigate whether the measured hadronic spectrum is missing some additional strange states, which are predicted by the Quark Model but have not yet been detected. This can be done by comparing some sensitive thermodynamic observables from lattice QCD to the predictions of the Hadron Resonance Gas model (with the inclusion of decays [3]). We propose a set of observables, defined as linear combinations of conserved charge fluctuations, where one can separate baryons by their strange quark content. These observables can isolate the multiplicity fluctuations of kaons from lattice QCD, which can then be compared with experimental results.