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MSSM dark matter constraints and decaying B-balls

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
<mark>Journal publication date</mark>12/11/1998
<mark>Journal</mark>Physics Letters B
Issue number1-2
Volume440
Number of pages7
Pages (from-to)59-65
Publication StatusPublished
<mark>Original language</mark>English

Abstract

In the MSSM, LSP dark matter could arise from the decay of B-balls rather than from thermal relies, 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. (C) 1998 Elsevier Science B.V. All rights reserved.