What Can We Learn from (Pseudo)Rapidity Distribution in High Energy Collisions?
Figure 5
Space density distributions of (a) , (b) , (c) , and (d) 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.
