Intermediate scales in SUSY SO(10), {ital b}-{tau} unification, and hot dark matter neutrinos
- Department of Physics, University of Maryland, College Park, Maryland 20742 (United States)
Considerations of massive neutrinos, baryogenesis, as well as fermion mass textures in the grand unified theory framework provide strong motivations for supersymmetric (SUSY) SO(10) as the theory beyond the standard model. If one wants to simultaneously accommodate the {nu}{sub {tau}} as the hot dark matter (HDM) of the universe, then this prefers the SO(10) theory to have an intermediate scale around 10{sup 10} to 10{sup 11} GeV. In this paper, we discuss examples of superstring-inspired SUSY SO(10) models with intermediate scales that are consistent with the low energy precision measurements of the standard model gauge couplings. The hypothesis of {ital b}-{tau} unification which is a successful prediction of many grand unified theories is then required of these models and the resulting prediction of the {ital b}-quark mass is used as a measure of the viability of these schemes. A detailed analysis of a model with a {ital v}{sub {ital B}{ital L}}{congruent}10{sup 11} GeV, which satisfies both the requirements of invisible axion and {nu}{sub {tau}} as HDM is presented and shown to lead to {ital m}{sub {ital b}}({ital m}{sub {ital b}}){congruent}4.9 GeV in the one-loop approximation.
- OSTI ID:
- 249544
- Journal Information:
- Physical Review, D, Vol. 52, Issue 7; Other Information: PBD: 1 Oct 1995
- Country of Publication:
- United States
- Language:
- English
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