Measurement of the ratio of Σ0/Λ inclusive production and the Σ0 and Λ polarizations by 28.5 GeV/C protons on beryllium

Abstract

The ratio of the cross section for Z ° inclusive production to the cross section for A inclusive production has been measured with 28.5 G-cV/e protons incident on a beryllium target. The ratio does not depend strongly on the momentum of the produced particle between 10 and 24 GcV/c and is 0.278_+0.011_+0.050, where the uncertainties are statistical and systematic in that order. The polarization of the Z ° has been measured with the same data and is found to be opposite to that of the A. The polarization of the A has also been measured in the transverse momentum range 0.64 < PT < I. 14 GeV/c and is consistcnt with previous results.