Mass predictions based on a supersymmetric SU(5) fixed point

Details Mass predictions based on a supersymmetric SU(5) fixed point Mass predictions based on a supersymmetric SU(5) fixed point

2002-11-24

arxiv.org/abs/hep-ph/0211370v2

Phys.Rev. D68 (2003) 015001

Physics

High Energy Physics

High Energy Physics - Phenomenology

40 pages, 9 figures, 9 tables, Revtex4

Scientific paper

10.1103/PhysRevD.68.015001

I examine the possibility that the third generation fermion masses are determined by an exact fixed point of the minimal supersymmetric SU(5) model. When one-loop supersymmetric thresholds are included, this unified fixed point successfully predicts the top quark mass, 175 +(-) 2 GeV, as well as the weak mixing angle. The bottom quark mass prediction is sensitive to the supersymmetric thresholds; it approaches the measured value for mu <0 and very large unified gaugino mass. The experimental measurement of the tau lepton mass determines tan(beta), and the strong gauge coupling and fine structure constant fix the unification scale and the unified gauge coupling.

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