Mass spectrum prediction in non-minimal supersymmetric models
by
Alexander Voigt(DESY)
→
Europe/Berlin
semiar room 2, building 2A (DESY Hamburg)
semiar room 2, building 2A
DESY Hamburg
Description
Supersymmetry is an attractive extension of the Standard Model (SM) of particle physics. The minimal supersymmetric extension (MSSM) provides gauge coupling unification, a dark matter candidate particle and can explain the breaking of the electroweak symmetry dynamically. However, it suffers from the little hierarchy and the mu-problem. Non-minimal supersymmetric extensions of the SM with a larger particle content or a higher symmetry can evade the problems of the MSSM. Such models may be well-motivated by Grand Unified Theories (GUTs) and can provide a rich new phenomenology with an extended Higgs sector, exotic particles, additional interactions and a close connection to String Theory. Interesting examples are the Next-to Minimal Supersymmetric Standard Model (NMSSM), which is motivated by the mu-problem, and the Exceptional Supersymmetric Standard Model (E6SSM), which is inspired by E6 GUTs.
For phenomenological investigations of supersymmetric (SUSY) models the pole mass spectrum must be calculated from the fundamental model parameters. This task, however, is non-trivial as the spectrum must be consistent with measured low-energy observables (fine-structure constant, Z boson pole mass, muon decay etc.) as well as electroweak symmetry breaking and potential universality conditions on the soft supersymmetry breaking parameters at the GUT scale.
In this talk several non-minimal SUSY models are presented as attractive extensions of the SM and it is explained how the pole-mass spectrum of these models can be calculated. The algorithm is presented in the framework of FlexibleSUSY, a general spectrum generator for SUSY models, which allows the study of a large variety of new SUSY models easily with high precision.
