Summary of studies of the η meson production with polarized proton beam at COSY‐11
We report on the COSY‐11 measurements of the analysing power for the pp→ppη reaction and interpret the results in the framework of the meson exchange models.
POLARIZATION PHENOMENA IN NUCLEAR REACTIONS.
The recent appearance of high-intensity polarized beams with a small energy spread has made feasible a number of experiments which could not have been considered just a few years ago. In many reactions, polarization parameters can often be measured almost as easily as cross sections. The volume of experimental data can thus be expected to increase rapidly; the results should be precise and reliable. The problem of explaining the measurements and drawing from them all the information about nuclear structure and nuclear reaction mechanisms that they contain is likely to severely challenge standard reaction theories.
POLARIZED PROTONS FROM THE ELASTIC SCATTERING OF $alpha$-PARTICLES BY HYDROGEN
The prediction that at certain angles the elastically scattered protons will be highly polarized for incident energies up to at least 10 Mev was checked in detail by examining the dependence of polarization on scattering angle for 10Mev protons on He/sup 4/. A method was devised for obtaining a highly- polarized and well-collimated beam of 10-Mev protons of sufficient intensity for use in elastic and inelastic scattering experiments. (M.H.R.)