Study of the transverse mass spectra of strange particles in Pb-Pb collisions at 158 A GeV/c

The NA57 Collaboration, F Antinori

The NA57 experiment has collected high statistics, high purity samples of \PKzS and \PgL, $\Xi$ and $\Omega$ hyperons produced in Pb-Pb collisions at 158 $A$ GeV/$c$. In this paper we pre…