CROSS-SECTIONS OF HE-4 INTERACTION WITH PROTONS AND HE-4-P ELASTIC-SCATTERING AT 2.7 GEV/C

The 2m hydrogen bubble chamber was exposed to a separated beam of alpha-particles from the ITEP synchrotron. The momentum of the He-4-nuclei beam averaged over the bubble-chamber fiducial volume was equal to 2.7 GeV/c (the kinetic energy of the initial protons in the nuclear rest frame was T(p) = 220 MeV). The total and topological cross sections were measured as well as the cross section of separate He-4-p interaction channels and the differential cross sections dsigma/dt of the elastic He-4-p scattering. The experimental results have been compared with the data of the previous experiments and with the theoretical predictions based on the Glauber-Sitenko multiple-scattering theory.