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

Feb, 1999
10 pages
Published in:
  • Phys.Lett.B 456 (1999) 118-123
e-Print:

Citations per year

19992003200720112015102
Abstract:
It is usually assumed that the order H^2 corrections to the SUSY-breaking mass squared terms in the early Universe must be 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.
Note:
  • LaTeX 10 pages
  • cosmological model
  • baryon: production
  • supersymmetry: symmetry breaking
  • correction
  • inflation
  • baryon: asymmetry
  • temperature
  • numerical calculations