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Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
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Likelihood analysis of supersymmetric SU(5) GUTs
E Bagnaschi1, J C Costa2, K Sakurai3,4
1DESY, Notkestraße 85, 22607 Hamburg, Germany.
The European Physical Journal. C, Particles and Fields
|March 7, 2017
Summary
This study analyzes supersymmetric models with SU(5) boundary conditions, incorporating new LHC and Dark Matter detection data. A novel coannihilation mechanism was found, highlighting complementarity between Dark Matter detection and LHC searches.
Area of Science:
- Particle Physics
- Cosmology
- Astrophysics
Background:
- Supersymmetric (SUSY) models are theoretical extensions of the Standard Model.
- SU(5) Grand Unified Theory (GUT) models provide a framework for unifying fundamental forces.
- Soft SUSY-breaking parameters at the GUT scale influence low-energy physics.
Purpose of the Study:
- To perform a likelihood analysis of constraints on SUSY SU(5) models.
- To incorporate the latest accelerator and astrophysical observational data.
- To investigate mechanisms for achieving the correct supersymmetric relic density.
Main Methods:
- Likelihood analysis of parameter space.
- Inclusion of constraints from LHC searches (13 TeV jets + MET, long-lived particles).
- Integration of Dark Matter direct detection data (PandaX-II, LUX).
Main Results:
- Identified a novel coannihilation mechanism in SUSY SU(5) GUT models.
- Found complementarity between direct Dark Matter detection prospects and LHC SUSY searches.
- Constrained the parameter space of SUSY SU(5) models using combined data.
Conclusions:
- The study provides updated constraints on SUSY SU(5) models.
- The interplay between Dark Matter detection and collider searches is crucial for uncovering new physics.
- The identified coannihilation mechanism offers new insights into early universe cosmology.
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