Vacuum stability of supersymmetric extended Higgs sectors with a discrete symmetry

Abstract

We study vacuum stability of supersymmetric extended Higgs sectors with a discrete $Z_2$ symmetry. These models may be able to explain dark matter, neutrino masses, baryon asymmetry of the Universe and hierarchy problem simultaneously at the TeV scale. This $Z_2$ symmetry could be broken spontaneously. We examine the stability of the $Z_2$ symmetric vacuum at the tree level in several models with such extended Higgs sectors.

Comments: References added, 5 pages, 2 figures, prepared for Proceedings of Toyama International Workshop on "Higgs as a Probe of New Physics 2013 (HPNP2013)", 13-16, February, 2013