Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-08-18
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.
Martens Waldemar
Mihaila Luminita
Salomon Jens
Steinhauser Matthias
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