Gauge Coupling Unification with Extra Dimensions and Correction due to Higher Dimensional Operators

Abstract

We study the gauge coupling unification with extra dimensions. We take into account corrections due to the higher dimensional operators. We show the prediction of ${\alpha }_3(M_Z)$ is sensitive to such corrections, even if $c<\Phi >/M=O(0.01)$. We also discuss the $b-\tau$ Yukawa unification.

Comments: 9 pages, latex, 2 figures