Unitarity Limits on the Mass and Radius of Dark Matter Particles
Sep, 198912 pages
Published in:
- Phys.Rev.Lett. 64 (1990) 615
Report number:
- CFPA-TH-89-013,
- FERMILAB-PUB-89-205-A
Citations per year
Abstract: (APS)
Using partial-wave unitarity and the observed density of the Universe, we show that a stable elementary particle which was once in thermal equilibrium cannot have a mass greater than 340 TeV. An extended object which was once in thermal equilibrium cannot have a radius less than 7.5×10−7 fm. A lower limit to the relic abundance of such particles is also found.- dark matter
- neutral particle: mass
- upper limit
- elastic scattering
- inelastic scattering
- S-matrix
- partial wave: unitarity
- thermodynamics
- fermion: Majorana
- fermion: Dirac
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