μ term and supersymmetry breaking from 6D theory

Abstract

We propose a new next-to-minimal supersymmetric standardmodel (NMSSM), which is on a 6D spacetime compactified on a T2/Z3 orbifold. In this model, three gauge singlet fields N, S1, and S 2 in addition to the minimal supersymmetric standard model (MSSM) fields are introduced. These fields are localized at some fixed points, except for the singlet N and the gauge fields. The μ parameter is provided from the vacuum expectation value (VEV) of N. The F terms get VEVs simultaneously, and the gauginos mediate the supersymmetry breaking to the MSSM sector. Both of these parameters are strongly suppressed due to the profile of N. Thus, these parameters, induced from those on the order of the so-called Grand Unified Theory (GUT) scale, can become close to the electroweak scale without unnatural fine tuning. © The Author(s) 2014.