Yukawa Quasi-Unification and Inflation

Abstract

We review the construction of a concrete supersymmetric grand unified model, which naturally leads to a moderate violation of "asymptotic" Yukawa unification and, thus, can allow an acceptable b-quark mass within the constrained minimal supersymmetric standard model with mu>0. The model possesses a wide and natural range of parameters which is consistent with the data on the cold dark matter abundance in the universe, b-->s gamma, the muon anomalous magnetic moment and the Higgs boson masses. Also, it automatically leads to a new version of shifted hybrid inflation, which avoids overproduction of monopoles at the end of inflation by using only renormalizable terms.

Talk presented by G. Lazarides at the BW2003 Workshop, Vrnjacka Banja, Serbia, 29 August-2 September 2003 (to appear in the proceedings), 15 pages including 3 figures, uses ws-procs9x6.cls and rotating_pr.sty