Dependence of Temperatures and Kinetic Freeze-Out Volume on Centrality in Au-Au and Pb-Pb Collisions at High Energy

Figure 1

Centrality-dependent of (a) π⁻, (b) K⁻, and (c) produced in in Au-Au collisions at 200 GeV. The symbols represent experimental data of the PHENIX Collaboration [38], while the curves are the results of our fits by using the two-component standard distribution, Equation (4) with . The spectra of centralities 0–5%, 5–10%, 10–15%, 15–20%, 20–30%, 30–40%, 40–50%, 50–60%, 60–70%, 70–80%, and 80–92% in the three panels are multiplied by 20, 10, 5, 2.5, 1.5, 1, 1, 1, 1, 1, and 1, respectively. In addition, the spectra of centralities 15–20%, 20–30%, 30–40%, 40–50%, 50–60%, 60–70%, 70–80%, and 80–92% in panel (a) are remultiplied by 0.8, 0.7, 0.6, 0.45, 0.3, 0.24, 0.17, and 0.15, respectively.

(a)

(b)

(c)