Developments and further Challenges in Unified Theories

by George Zoupanos (Athens University)

Monday 24 Feb 2014, 16:30 → 17:30 Europe/Berlin

seminar room 2, building 2A (DESY Hamburg)

We apply the method of reduction of couplings in a Finite Unified Theory and in the MSSM. The method consists in searching for renormalization group invariant relations among couplings of a renormalizable theory holding to all orders in perturbation theory. In both cases we predict the masses of the top and bottom quark massses and the light Higgs mass in remarkable agreement with the experiment. Moreover we predict the masses of the other Higgses too, as well as the supersymmetric spectrum, the latter being in very confortable agreement with the LHC bounds on supersymmetric particles.