Speaker
Dr
John McDonald
(Lancaster University)
Description
The similarity of the observed densities of baryons and CDM suggest that they
have a common or related origin. This can be understood in the context of the
MSSM with RH sneutrinos if CDM is due to a d=4 flat direction condensate of
very weakly coupled RH sneutrino LSPs and the baryon asymmetry is
generated by d = 4 (H_{u}L)^2 Affleck-Dine leptogenesis. An observable CDM
isocurvature perturbation is possible in the case of inflation driven by a D-term
or by an F-term with suppressed H-corrections to A-terms. Combined with
distinctive NLSP collider phenomenology, this would provide a clear signature
for RH sneutrino condensate CDM.
Author
Dr
John McDonald
(Lancaster University)
