Towards predictive flavour models in SUSY SU(5) GUTs with doublet-triplet splitting

Antusch, Stefan and de Medeiros Varzielas, Ivo and Maurer, Vinzenz and Sluka, Constantin and Spinrath, Martin. (2014) Towards predictive flavour models in SUSY SU(5) GUTs with doublet-triplet splitting. Journal of High Energy Physics, 09. p. 141.

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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.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Antusch)
UniBasel Contributors:Antusch, Stefan and Maurer, Vinzenz and Sluka, Constantin and De Medeiros Varzielas, Ivo
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:02 Mar 2018 10:40
Deposited On:02 May 2016 09:13

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