Effects of supersymmetric threshold corrections on the Yukawa matrix unification

Supersymmetric Cold Dark Matter with Yukawa Unification

The cosmological relic density of the lightest supersymmetric particle of the minimal supersymmetric standard model is calculated under the assumption of gauge and Yukawa coupling unification. We employ radiative electroweak breaking with universal boundary conditions from gravitymediated supersymmetry breaking. Coannihilation of the lightest supersymmetric particle, which turns out to be an al...

Supersymmetric Grand Unified Theories and Yukawa Unification

Precision Corrections to Supersymmetric Unification

We compute the full set of weak-scale gauge and Yukawa threshold corrections in the minimal supersymmetric standard model, including all finite (non-logarithmic) corrections, which we show to be important. We use our results to examine the effects of unification-scale threshold corrections in the minimal and missing-doublet SU(5) models. We work in the context of a unified mass spectrum, with s...

Comment On “ Grand Unification and Supersymmetric Threshold ”

String Unification and Threshold Corrections

The interpretation of the apparent unification of gauge couplings within supersymmetric theories depends on uncertainties induced through heavy particle thresholds. While in standard grand unified theories these effects can be estimated easily, the corresponding calculations are quite complicated in string unified theories and do exist only in models with unbroken E6. We present results for hea...