Searching for Minimum in Dependence of Squared Speed-of-Sound on Collision Energy

Figure 1

Rapidity distributions of negatively charged pions produced in - and ⁷Be-⁹Be collisions at the SPS. (a)–(e) Corresponding to different beam momentums marked in the panels. The symbols represent the experimental data of the NA61/SHINE Collaboration [6, 7] and the curves are our results fitted by the revised (three-source) Landau hydrodynamic model.

(a)

(b)

(c)

(d)

(e)