Regulating the Baryon Asymmetry in No-Scale Affleck-Dine Baryogenesis

Abstract

In supergravity models (such as standard superstring constructions) that possess a Heisenberg symmetry, supersymmetry breaking by the inflationary vacuum energy does not lift flat directions at tree level. One-loop corrections give small squared masses that are negative (about -g^2 H^2/(4π)^2) for all flat directions that do not involve the stop. After inflation, these flat directions generate a large baryon asymmetry; typically $n_B/s\sim$ O(1). We consider mechanisms for suppressing this asymmetry to the observed level. These include dilution from inflaton or moduli decay, GUT nonflatness of the $vev$ direction, and higher dimensional operators in both GUT models and the MSSM. We find that the observed BAU can easily be generated when one or more of these effects is present.

21 pages, latex, 1 ps figures

References in corpus (4)

• Can The Supersymmetric Flavor Problem Decouple?
• Supersymmetry breaking and weakly vs. strongly coupled string theory
• On non-perturbative corrections to the Kahler potential
• Inflation and flat directions in modular invariant superstring effective theories

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