What Can We Learn from (Pseudo)Rapidity Distribution in High Energy Collisions?
Figure 4
Distributions of (a) and (b) of negatively charged pions produced in collisions at the SPS. The solid, dotted, dashed, and dotted-dashed curves correspond to the results at 158, 80, 40, and 20 GeV/c, respectively. The closed circles show the results of the isotropic emission. The open circles represent the contribution of the target cylinder at 158 GeV/c.
