Karlsruhe 2011 – scientific programme

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T: Fachverband Teilchenphysik

T 18: Beyond the Standard Model (Theorie) III

T 18.5: Talk

Thursday, March 31, 2011, 17:45–18:00, 30.23: 6-1

Doubly charged Higgs bosons in an SU(5) GUT model — •Karsten Schnitter — Universität Siegen

The minimal non-SUSY SU(5) is ruled out by proton stability and non-unification of gauge couplings. However, models with extended field content have been shown to evade present experimental bounds. Adding a scalar 15-plet provides such an extension while simultaneously introducing a type-II see-saw neutrino mass. Considering the full Higgs potential, we show that breaking the SU(5) symmetry necessarily leads to doubly charged Higgs bosons with masses within the LHC reach. Additional singly charged and neutral Higgses are discussed as well.