2017/09/22 by Antonio Costantini, Costantini, Antonio
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.1709.07765
20 pages, 23 figures, 1 table
arxiv created 2017/09/22 · openalex publication_date 2017/09/22 · arxiv updated 2017/09/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We analize the impact of two-loop renormalization group equations on the SU(3)c× SU(2)w× U(1)Y gauge couplings unification in various supersymmetric theories. In general the presence of superfields in higher representation than the doublet spoil the gauge couplings unification at one-loop. The situation is more interesting when the renormalization group equations are calculated at two-loop. In this case we show that the unification of the gauge couplings can be achieved for models with triplet superfield(s). In the analysis of the models with triplet superfield(s) we show that the dimensionless couplings do not have a Landau pole in their evolution at high energies but they run to a nontrivial ultraviolet fixed point.