Supersymmetric superheavy dark matter

2008/10/31 by V. Berezinsky, M. Kachelriess, M. Kachelrieß +1
Physics and Astronomy · #Astrophysics #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark fluid #Dark matter #Lightest Supersymmetric Particle #Mixed dark matter #Neutralino #Particle physics #Particle physics theoretical and experimental studies #Physics #Warm dark matter #hep-ph

paper · pdf · doi:10.1103/physrevd.78.123535

published as Phys.Rev.D78:123535,2008 · 9 pages; v2: references added, matches version to be published

arxiv created 2008/12/12 · openalex publication_date 2008/12/30 · arxiv updated 2010/04/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We propose the lightest supersymmetric particle (LSP) as a well-suited candidate for superheavy dark matter (SHDM). Various production mechanisms at the end of inflation can produce SHDM with the correct abundance, \ensuremathΩ_LSPh²\ensuremath∼0.1, if its mass is sufficiently high. In particular, gravitational production requires that the mass m_LSP of the LSP is above 3\ifmmode×\else\texttimes\fi10¹¹ GeV. Weak interactions remain perturbative despite the large mass hierarchy, m_LSP\ensuremath≫m_Z, because of the special decoupling properties of supersymmetry. As a result the model is predictive and we discuss the relevant cosmological processes for the case of a superheavy neutralino within this scheme.

Citations

• Reheating stage after inflation
• Infrared singularities and massive fields
• Small-scale clumps in the galactic halo and dark matter annihilation
• de Sitter vacua in string theory
• Ultrahigh-energy cosmic rays, superheavy long-lived particles, and matter creation after inflation