Postcards from oases in the desert: phenomenology of SUSY with intermediate scales
arXiv:1205.6817 · doi:10.1007/JHEP08(2012)150
Abstract
The presence of new matter fields charged under the Standard Model gauge group at intermediate scales below the Grand Unification scale modifies the renormalization group evolution of the gauge couplings. This can in turn significantly change the running of the Minimal Supersymmetric Standard Model parameters, in particular the gaugino and the scalar masses. In the absence of new large Yukawa couplings we can parameterise all the intermediate scale models in terms of only two parameters controlling the size of the unified gauge coupling. As a consequence of the modified running, the low energy spectrum can be strongly affected with interesting phenomenological consequences. In particular, we show that scalar over gaugino mass ratios tend to increase and the regions of the parameter space with neutralino Dark Matter compatible with cosmological observations get drastically modified. Moreover, we discuss some observables that can be used to test the intermediate scale physics at the LHC in a wide class of models.
arXiv comment24 pages, 16 figures
References in corpus (16)
- Theories with Gauge-Mediated Supersymmetry Breaking
- Multi-TeV Scalars are Natural in Minimal Supergravity
- Mass Matrix Models: The Sequel
- Mass Matrix Models
- Neutralino Dark Matter in Focus Point Supersymmetry
- Calculations of Neutralino-Stau Coannihilation Channels and the Cosmologically Relevant Region of MSSM Parameter Space
- Neutralino-Stau Coannihilation and the Cosmological Upper Limit on the Mass of the Lightest Supersymmetric Particle
- Low energy effects of neutrino masses
- Capability of LHC to discover supersymmetry with \sqrt{s}=7 TeV and 1 fb^{-1}
- How can we test seesaw experimentally?
- SUSY-GUTs, SUSY-Seesaw and the Neutralino Dark Matter
- Phenomenology of SUSY SU(5) with type I+III seesaw
- Flavour violation in supersymmetric SO(10) unification with a type II seesaw mechanism
- The Messenger Sector of SUSY Flavour Models and Radiative Breaking of Flavour Universality
- Gauge coupling unification, the GUT scale, and magic fields
- Dark matter and LHC phenomenology in a left-right supersymmetric model