Eternal annihilations of light photinos

Abstract

In a class of low-energy supersymmetry models the photino is a natural dark matter candidate. We investigate the effects of post-freeze-out photino annihilations which can generate electromognetic cascades and lead to photo-destruction of ${}^4$He and subsequent overproduction of D and ${}^3$He. We also generalize our analysis to a generic dark matter component whose relic abundance is {\it not} determined by the cross section of the self-annihilations giving rise to electromagnetic showers.

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References in corpus (7)

• Supersymmetric Dark Matter
• Big-Bang Nucleosynthesis and the Baryon Density of the Universe
• Phases in the MSSM, Electric Dipole Moments and Cosmological Dark Matter
• Electromagnetic Cascades and Cascade Nucleosynthesis in the Early Universe
• Experiments to Find or Exclude a Long-Lived, Light Gluino
• Corrections to Bino Annihilation I: Sfermion Mixing
• LIGHT PHOTINOS AS DARK MATTER

Cited by in corpus (4)

• Mass Bounds on a Very Light Neutralino
• Cosmic Microwave Background constraint on residual annihilations of relic particles
• Stars and Halos of Degenerate Relativistic Heavy-Neutrino and Neutralino Matter
• Post freeze-out annihilations in the early universe