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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Abstract

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.

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
83235
Deposited By:
Deposited On:
29 Nov 2016 11:48
Refereed?:
Yes
Published?:
Published
Last Modified:
22 Jan 2020 03:24