Charm fluctuations from lattice QCD match a hadron resonance gas only when quark-model-predicted charmed hadrons are added, and above the crossover a charm-quark-like partial pressure emerges.
More specifically, for not yet observed charmed states we used the relativistic quark model of Refs
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Generalized susceptibilities and the properties of charm degrees of freedom across the QCD crossover temperature
Charm fluctuations from lattice QCD match a hadron resonance gas only when quark-model-predicted charmed hadrons are added, and above the crossover a charm-quark-like partial pressure emerges.