TTP14-014 Towards predictive flavour models in SUSY SU(5) GUTs with Doublet-Triplet splitting

TTP14-014 Towards predictive flavour models in SUSY SU(5) GUTs with Doublet-Triplet splitting

TTP14-014 Towards predictive flavour models in SUSY SU(5) GUTs with Doublet-Triplet splitting

We discuss how the double missing partner mechanism solution to the doublet-triplet splitting problem in four-dimensional supersymmetric SU(5) Grand Unified Theories (GUTs) can be combined with predictive models for the quark-lepton Yukawa coupling ratios at the GUT scale. It is argued that towards this goal a second SU(5) breaking Higgs field in the adjoint representation is very useful and we discuss all possible renormalizable superpotentials with two adjoint Higgs fields and calculate the constraints on the GUT scale and effective triplet mass from a two-loop gauge coupling unification analysis. Two explicit flavour models with different predictions for the GUT scale Yukawa sector are presented, including shaping symmetries and a renormalizable messenger sector. Towards calculating the rates for proton decay induced by the exchange of colour triplets, the required Clebsch-Gordan coefficients for their couplings are calculated for the possible dimension five and six operators. They are provided in detailed tables in the appendix, together with additional helpful material for GUT flavour model building.

Stefan Antusch, Ivo de Medeiros Varzielas, Vinzenz Maurer, Constantin Sluka, Martin Spinrath
JHEP 1409 141 2014
PDF PostScript arXiv
This website uses cookies for visitor traffic analysis. By using the website, you agree with storing the cookies on your computer.More information