Abstract
We use string theory constructions towards the generalisation of the supersymmetric standard model of strong and electroweak interactions. Properties of the models depend crucially on the location of fields in extradimensional compact space. This allows us to extract some generic lessons for the phenomenological properties of the low energy effective action. Within this scheme we present a compelling model based on local grand unification and mirage mediation of supersymmetry breakdown. We analyse the properties of the specific model towards its possible tests at the LHC and the complementarity to direct dark matter searches.
Highlights
There are many arguments for physics beyond the SU(3) × SU(2) × U(1) standard model (SM) of strong and electroweak interaction
Properties of the models depend crucially on the location of fields in extradimensional compact space. This allows us to extract some generic lessons for the phenomenological properties of the low energy effective action. Within this scheme we present a compelling model based on local grand unification and mirage mediation of supersymmetry breakdown
A protection of the Higgs mass can be achieved within a supersymmetric scheme; the main motivation for supersymmetry [4, 5] is the stability of the weak scale: this mechanism requires new particles at the weak scale, partners of quarks, leptons, and gauge bosons that could be discovered at LHC
Summary
There are many arguments for physics beyond the SU(3) × SU(2) × U(1) standard model (SM) of strong and electroweak interaction. In this paper we want to discuss the possible phenomenology of string motivated models This is a so-called top-down approach to obtain a unified description of all interactions including gravity. It starts with a universal scheme where many things can come together: supersymmetry, extra dimensions, axions, grand unification additional singlets, additional U(1) gauge bosons, and maybe much more. This will be followed by an analysis of the possible reach of experimental searches at Advances in High Energy Physics the LHC given present results of the first LHC run.
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