2010/08/31 by Waldemar Martens, W. Martens, L. Mihaila +2
Physics and Astronomy · #Computer science #Coupling (piping) #Coupling constant #Decoupling (probability) #Electroweak interaction #Electroweak scale #Gauge (firearms) #Gauge theory #Grand Unified Theory #Minimal Supersymmetric Standard Model #Neutrino Physics Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton decay #Quantum Chromodynamics and Particle Interactions #Supersymmetric gauge theory #Supersymmetry #Unification #hep-ph
paper · pdf · doi:10.1103/physrevd.82.095013
published as Phys.Rev.D82:095013,2010 · 22 pages, 6 figures, references added, v2 matches published version
arxiv created 2010/11/05 · openalex publication_date 2010/11/30 · arxiv updated 2010/12/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 superheavy 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.