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Elastically Decoupling Dark Matter
Eric Kuflik1, Maxim Perelstein1, Nicolas Rey-Le Lorier1
1Laboratory for Elementary Particle Physics, Cornell University, Ithaca, New York 14850, USA.
Physical Review Letters
|June 18, 2016
Summary
We propose a new dark matter candidate: an elastically decoupling relic. Its abundance depends on scattering with standard model particles, with a mass of MeV and a small scattering cross-section.
Area of Science:
- Particle Physics
- Cosmology
- Astrophysics
Background:
- The nature of dark matter remains one of the most significant unsolved problems in modern physics.
- Existing dark matter candidates often rely on weak interactions or non-thermal production mechanisms.
Purpose of the Study:
- To introduce a novel dark matter candidate, the elastically decoupling relic.
- To explore its properties and potential detection signatures.
Main Methods:
- Theoretical modeling of particle interactions and relic abundance.
- Analysis of elastic scattering cross-sections with Standard Model particles.
Main Results:
- The proposed candidate is a cold thermal relic whose abundance is determined by elastic scattering cross-sections.
- Predicted mass range: a few to a few hundred MeV.
- Predicted elastic scattering cross-section with electrons, photons, and/or neutrinos: 10^{-3}-1 fb.
Conclusions:
- The elastically decoupling relic presents a viable new dark matter candidate.
- Its predicted properties offer testable predictions for future experimental searches.
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