Constraints on the Minimal SUSY SO(10) Model from Cosmology and the $b\to s γ$ Decay

Details Constraints on the Minimal SUSY SO(10) Model from Cosmology and the $b\to s γ$ Decay Constraints on the Minimal SUSY SO(10) Model from Cosmology and the $b\to s γ$ Decay

1994-12-28

arxiv.org/abs/hep-ph/9412379v2

Phys.Lett.B349:311-318,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, latex, 5 figures (not included, available on request)

Scientific paper

10.1016/0370-2693(95)00270-U

It is shown that the minimal supersymmetric SO(10) model with electroweak radiative breaking and universal soft mass terms at the GUT scale is strongly disfavoured by the combination of constraints from the $b\to s \gamma$ decay and the condition $\Omega h^2 < 1$ for the lightest (stable) neutralino. The constraints are, however, easily satisfied for certain class of supersymmetric SO(10) models with non--universal scalar masses which gives small supersymmetric corrections to the bottom quark mass and light higgsino--like neutralinos.

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