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Updated: May 18, 2026
07:46
Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Asymmetric Higgsino dark matter
Kfir Blum1, Aielet Efrati, Yuval Grossman
1Institute for Advanced Study, Princeton, New Jersey 08540, USA. kblum@ias.edu
Physical Review Letters
|September 26, 2012
Summary
In supersymmetry, Higgsinos could explain dark matter. This framework links dark matter abundance to baryon asymmetry, potentially solving why their densities are similar.
Area of Science:
- Particle Physics
- Cosmology
- Astrophysics
Background:
- The observed baryon asymmetry suggests a corresponding asymmetry in Higgsinos within supersymmetric theories.
- Dark matter remains a significant mystery in cosmology, with its abundance and properties not fully understood.
Purpose of the Study:
- To investigate Higgsino as a viable candidate for asymmetric dark matter.
- To explore if supersymmetry can simultaneously explain dark matter abundance and its relation to baryon asymmetry.
Main Methods:
- Analysis within the supersymmetric framework, focusing on the electroweak phase transition.
- Consideration of specific particle spectra where only Higgsinos are at the electroweak scale.
Main Results:
- Higgsino is found to be a viable asymmetric dark matter candidate.
- Supersymmetry can account for the observed dark matter abundance and link it to baryon asymmetry.
- The similarity between baryonic and dark matter mass densities can be explained.
Conclusions:
- A specific supersymmetric scenario, requiring heavy gauginos, squarks, and sleptons, with a low-temperature electroweak phase transition (1-10 GeV), supports Higgsino dark matter.
- This scenario necessitates extensions to the minimal supersymmetric standard model.
- While explaining dark matter and baryon asymmetry, this model does not resolve the fine-tuning problem in supersymmetry.
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