SEARCH FOR CHARGED MASSIVE PARTICLES IN COSMIC-RAYS

Assuming that charged massive particles (CHAMPs) have a Maxwell-Boltzmann velocity distribution, truncated at the galactic escape velocity, and that CHAMPs comprise the galactic dark matter, we can rule out CHAMPs with masses between 350 and 8.6×104 TeV/c2 in the solar neighborhood. In addition, we can rule out masses of neutral CHAMP-proton composites between 100 and 4×104 TeV/c2, provided that they charge exchange with C or O nuclei with a cross section having a value in the interval 30 mb30 b. © 1990 The American Physical Society.