On the Higher Moments of Particle Multiplicity, Chemical Freeze-Out, and QCD Critical Endpoint

Figure 4

The ratio 𝜎²/⟨𝑁⟩ is given depending on 𝑇 at different chemical potentials 𝜇 for hadronic (a), bosonic (b), and fermionic (c) resonance gas.

(a)

(b)

(c)