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T: Fachverband Teilchenphysik

T 17: Beyond the Standard Model (Theorie) 3

T 17.3: Talk

Wednesday, February 29, 2012, 17:15–17:30, VG 3.102

SU(3)-Flavons in Pati-Salam-GUTs — •Florian Hartmann, Wolfgang Kilian, and Karsten Schnitter — Universität Siegen, Deutschland

Pati-Salam GUTs are a first step in the direction of a complete fermion unification. As left-right-symmetric extensions of the SM they contain a right-handed neutrino. In addition the symmetry leads to a correlation between leptons and quarks. Thus they provide a framework to study mechanisms generating flavour structures simultaneously in quark and lepton sector.

We study a SU(3) flavour symmetry and show how the spontaneous breaking of this symmetry by flavons may generate tribimaximal mixing for the leptons as well as nearly diagonal mixing in the quarks. Within this framework we present a supersymmetric model containing flavoured Higgs fields which may lead to a matter-Higgs-unification. We investigate which flavon representations are useful in constructing models leading to the desired CKM- and PMNS-mechanisms. Furthermore we discuss the problems of this approach and present possible solutions.