  In the MSSM, LSP dark matter could arise from the decay of B-balls rather
than from thermal relics, with a quite different dependence on the MSSM
parameters and a natural correlation with the baryon asymmetry. We discuss the
constraints imposed on the properties of B-balls and the MSSM spectrum by
experimental constraints and show that B-balls cannot form from an Affleck-Dine
condensate with 100% efficiency in the absence of LSP annihilations after they
decay. For likely formation efficiencies the LSP and slepton masses are
typically constrained to be light. The effects of LSP annihilations after the
B-balls decay are discussed; for sufficiently small decay temperatures
annihilations will play no role, opening up the possibility of experimentally
testing the scenario.
