"Atmospheric Neutrino" and "Proton Decay" Data Exclude Some New Dark Matter Scenarios

Models in which the "dark" halo particles have mutual and potentially also appreciable nuclear interactions have been considered by various authors. In this note we briefly point out strategies for a most sensitive search for these particles. We show that a particular matter/anti-matter symmetric variant due to Farrar et al. is excluded by combining bounds on proton decay from various experiments and from super-Kamiokande and atmospheric neutrino measurements at super-Kamiokande.