STRANGENESS PRODUCTION USING A π~- BEAM AT 1.15 GeV/c WITH FOPI

摘要

Pion-induced reactions were studied with the FOPI detector at an incident momentum of 1.15 GeV/c. Data were taken for five different targets: C, Al, Cu, Sn and Pb. A preliminary comparison of the phase-space distribution of the reconstructed K_S~0 to the results of the IQMD transport-model calculations, as well as the preliminary study of the scaling behavior of the inclusive π~-A → K~0 X cross-section as a function of the mass of the target nucleus is reported. A preliminary estimate of the elementary π~-p → K~0 Y cross section in the presence of the surrounding nuclear medium is discussed.