NUKLEONIKA 2006, 51(Suppl. 3):s11-s15

RAPIDITY DISTRIBUTIONS OF STRANGE PARTICLES IN Pb-Pb AT 158 AGeV

Giuseppe E. Bruno
on behalf on the NA57 Collaboration

Dipartimento IA di Fisica dell’Universita e del Politecnico di Bari
and INFN Via Amendola 173, I-7026 Bari, Italy

The production at central rapidity of KS0, L, X and W particles in Pb-Pb collisions at 158 AGeV has been measured by the NA57 experiment over a centrality range corresponding to the most central 53% of the inelastic Pb-Pb cross section. We present the rapidity distribution of each particle in the central rapidity unit. The distributions are analysed based on hydrodynamical models of the collisions.