DETECTION OF SUPERSYMMETRIC DARK-MATTER

A re-analysis of a heavy charged particle production event observed at the cloudy chamber of the Yunnan Cosmic Ray Station (YCRS) in 1972 in dicates that the mysterious heavy particle may be identified as a supe rsymmetric (SUSY) particle produced by a bombard of a neutral SUSY cos mic ray particle on proton. Based on the assumption, following the lit eratures that the neutral SUSY particle which constitutes the main fra ction of the cold dark matter is scalar neutrino (sneutrino) or neutra lino (photino), we evaluate the flux of such SUSY particles which gain sufficient energies via elastic scattering with charged cosmic partic les on the way to an Earth detector and the capture rates in both the sneutrino and photino cases respectively. The errors appearing in the study are briefly discussed and this work may provide a basis of desig ning cosmic ray detectors to search for SUSY particles from the heaven .