Positive order-H-2 mass corrections and Affleck-Dine baryogenesis

McDonald, John (1999) Positive order-H-2 mass corrections and Affleck-Dine baryogenesis. Physics Letters B, 456 (2-4). pp. 118-123. ISSN 0370-2693

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It is usually assumed that the order H-2 corrections to the SUSY-breaking mass squared terms in the early Universe must he negative in order to allow the Affleck-Dine mechanism to work. We reconsider this assumption in the context of D-term inflation models for the case where the mass squared term has a correction cH(2) with c > 0. We show that, in general, the baryon asymmetry is likely to be too small if c > 9/16. However, for c as large as 0.5 the observed baryon asymmetry can be readily generated; in particular, for d = 6 directions the observed asymmetry can be produced for a wide range of reheating temperatures, in contrast with the case of negative H-2 corrections which require a reheating temperature around 1 GeV. Thus positive H-2 corrections do not rule out the Affleck-Dine mechanism and can even greatly broaden its applicability to inflation models.

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Journal Article
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Physics Letters B
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29 Nov 2016 11:48
Last Modified:
22 Nov 2022 04:07