3-8 July 2016
The University of Melbourne
Australia/Melbourne timezone

From E8-inspired SUSY trinification to a L-R symmetric theory

4 Jul 2016, 17:10
Alice Hoy Room 225 ()

Alice Hoy Room 225

Talk SUSY Models SUSY Models


Antonio Morais (Universities of Aveiro and Lund)


In this talk we propose a new supersymmetric model based on the trinification gauge group with global SU(3) flavour symmetry. We aim at solving the major issues of conventional trinification GUTs, such us multi-TeV SM fermion masses, as well as providing a natural way to introduce a SU(2)_L x SU(2)_R symmetry. We investigate whether it is possible to spontaneously break the original gauge symmetry and find that the minimal field content allowing for stable vacuum solutions requires three copies of a full E6 27-plet, three gauge octets from an adjoint 78-plet and a flavour octet, all belonging to a common fundamental 246-plet of E8. Unlike older realizations, the new flavour symmetry forbids leptons from acquiring tree-level masses naturally suppressing them from the GUT scale. Besides gauge coupling unification we also predict novel features such as top-bottom-tau Yukawa unification alongside with Higgs-lepton unification, which are only possible in supersymmetric realizations of the trinification model.

Primary author

Antonio Morais (Universities of Aveiro and Lund)


Ms Astrid Ordell (Lund University) Jonas Wessén (Lund University) Dr José Eliel Camargo Molina (Lund University) Marco Oliveira Pena Sampaio (University of Aveiro) Roman Pasechnik (Lund University)

Presentation Materials