R. Lietava

Strangeness enhancements at central rapidity in 40 A GeV/c Pb-Pb collisions

Results are presented on the production of K0S, hyperons and antihyperons in Pb–Pb and p–Be interactions at 40 GeV/c per nucleon. The enhancement pattern follows the same hierarchy as seen in the higher energy data—the enhancement increases with the strangeness content of the hyperons and with the centrality of collision. The centrality dependence of the Pb–Pb yields and enhancements is steeper at 40 than at 158 A GeV/c. The energy dependence of strangeness enhancements at mid-rapidity is discussed.

Transverse mass spectra of strange and multi–strange particles in Pb–Pb collisions at 158 A GeV/c

Abstract. The WA97 experiment has measured the transverse mass

LAMBDA , XI AND OMEGA PRODUCTION AT MID-RAPIDITY IN PB-PB AND P-PB COLLISIONS AT 158 A GEV/C

({m_{\mathrm T}})

Centrality dependence of the expansion dynamics in Pb Pb collisions at 158-A-GeV/c

spectra for negative hadrons (

Determination of the event centrality in the WA97 and NA57 experiments

\mathrm{h}^-

Results on hyperon production from NA57

) and strange particles produced at mid–rapidity in Pb–Pb collisions. The increased statistics of analysed data samples allowed us to perform a study of the spectra of

Silicon pixel detectors for tracking in NA57

{\rm K_S^0}

Hyperon production in proton-sulphur collisions at 200 GeV/c

,

Λ, Ξ and Ω production in PbPb collisions at 158 A GeV/c

\mathrm{\Lambda}

ALICE Trigger System

,