E6 inspired supersymmetry

by Peter Athron (Monash University)

Monday 26 Jan 2015, 16:30 → 17:30 Europe/Berlin

semiar room 2, building 2A (DESY Hamburg)

E6 inspired supersymmetric extensions of the standard model provide the most elegant solution to the mu-problem of the the minimal supersymmetric standard model (MSSM), contain extra tree level contributions that raise the Higgs mass, exotic phenomenology and are well motivated from high scale physics. I will review these very interesting models, explaining the structure of the electroweak symmetry breaking and predictions for the masses, which turn out to be rather rigid in the models previously considered, suggesting very heavy, multi-TeV sparticles. I will then discuss the status of such models in terms of the primary motivations for supersymmetry: gauge coupling unification, dark matter and naturalness with particular focus on the latter. Finally I will discuss a special class of these models with a mechanism that relaxes the very rigid structure, allowing lighter spectra and potentially opening up a new Higgs decay channel into light pseudoscalars.