Minimal Supersymmetric SU(5) and Gauge Coupling Unification at Three Loops

Details Minimal Supersymmetric SU(5) and Gauge Coupling Unification at Three Loops Minimal Supersymmetric SU(5) and Gauge Coupling Unification at Three Loops

2010-08-18

arxiv.org/abs/1008.3070v2

Phys.Rev.D82:095013,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 6 figures, references added, v2 matches published version

Scientific paper

10.1103/PhysRevD.82.095013

We consider the relations between the gauge couplings at the electroweak scale and the high scale where unification of the three gauge couplings is expected. Threshold corrections are incorporated both at the supersymmetric and at the grand unified scale and, where available three-loop running and two-loop decoupling are employed. We study the impact of the current experimental uncertainties of the coupling constants and the supersymmetric mass spectrum on the prediction of the super-heavy masses within the so-called minimal supersymmetric SU(5). As a main result of the three-loop analysis we confirm that minimal supersymmetric SU(5) cannot be ruled out by the current experimental data on proton decay rates.

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