Neutralino dark matter from heavy axino decay

Abstract

We consider cosmological consequences of a heavy axino, decaying to the neutralino in R-parity conserving models. The importance and influence of the axino decay on the resultant abundance of neutralino dark matter depends on the lifetime and the energy density of axino. For a high reheating temperature after inflation, copiously produced axinos dominate the energy density of the universe and its decay produces a large amount of entropy. As a bonus, we obtain that the upper bound on the reheating temperature after inflation via gravitino decay can be moderated, because the entropy production by the axino decay more or less dilutes the gravitinos.

7 pages, 4 figures; references added, published version in Phys. Rev. D

References in corpus (33)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Theories with Gauge-Mediated Supersymmetry Breaking
• Big-Bang Nucleosynthesis and Hadronic Decay of Long-Lived Massive Particles
• Thermal Production of Gravitinos
• Astrophysical Axion Bounds
• Hadronic Decay of Late-Decaying Particles and Big-Bang Nucleosynthesis
• Big Bang Nucleosynthesis Constraints on Hadronically and Electromagnetically Decaying Relic Neutral Particles
• The Soft Supersymmetry-Breaking Lagrangian: Theory and Applications
• Axinos as Cold Dark Matter
• Axinos as Dark Matter
• Big-Bang Nucleosynthesis with Unstable Gravitino and Upper Bound on the Reheating Temperature
• Axino dark matter from thermal production
• Axino Mass in Supergravity Models
• Hadronic axion window and the big-bang nucleosynthesis
• Non-thermal dark matter via Affleck-Dine baryogenesis and its detection possibility
• Axino Mass
• Signatures of Axinos and Gravitinos at Colliders
• Massive Particle Decay and Cold Dark Matter Abundance
• Axino dark matter from Q-balls in Affleck-Dine baryogenesis and the ${\Omega }_b-{\Omega }_{DM}$ coincidence problem
• E-Wimps
• Axino Dark Matter and the CMSSM
• Solving the Gravitino Problem by Axino
• Effects of Squark Processes on the Axino CDM Abundance
• Dark Matters in Axino Gravitino Cosmology
• Non-thermal Production of Dark Matter from Late-Decaying Scalar Field at Intermediate Scale
• Hadronic Axion Model in Gauge-Mediated Supersymmetry Breaking and Cosmology of Saxion
• Axino warm dark matter and ${\Omega }_b-{\Omega }_{DM}$ coincidence
• Dilution of Cosmological Densities by Saxino Decay
• Dark Matter and Structure Formation with Late Decaying Particles
• A dark matter solution from the supersymmetric axion model
• Affleck-Dine baryogenesis and gravitino dark matter
• A Note on Polonyi Problem

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