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Axinos as Cold Dark Matter

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arxiv hep-ph/9905212 v1 pith:KH5ZINK2 submitted 1999-05-03 hep-ph astro-ph

Laura Covi , Jihn E. Kim , Leszek Roszkowski This is my paper
classification hep-phastro-ph
keywords axinoscolddarkdensitymatteruniversearguebecause
verification ladder T0 review T1 audit T2 compute T3 formal
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We show that axinos produced in the early Universe in the decay of the lightest neutralinos are a natural candidate for cold dark matter. We argue that axinos may well provide the main component of the missing mass in the Universe because their relic density is often comparable with the critical density.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Decaying Dark Matter Halo Abundance from a Revised Spherical Collapse Model

    astro-ph.CO 2026-07 conditional novelty 6.0 of 10

    A mass-dependent collapse threshold from a revised spherical collapse model predicts the decaying-dark-matter halo mass function, matching N-body simulations at z≈1 and for mild kicks at z=0.

  2. BSFfast: Rapid computation of bound-state effects on annihilation in the early Universe

    hep-ph 2025-12 conditional novelty 6.0 of 10

    A public tool with new exact rescaling identities makes bound-state-formation cross sections with up to 100 excited states fast enough for routine dark-matter Boltzmann-solver scans.

  3. A frequentist view on the two-body decaying dark matter model

    astro-ph.CO 2025-05 conditional novelty 6.0 of 10

    A frequentist reanalysis of Planck and KiDS-1000 data shows that a two-body decaying dark matter model can produce S8 values consistent with weak lensing surveys, and that prior choices dominated earlier Bayesian exclusions.

  4. Evading Dark Matter Bounds through NLSP-Assisted Freeze-Out with Long-Lived Signatures

    hep-ph 2025-06 conditional novelty 5.0 of 10

    In a U(1)B-L model with four chiral fermions, conversion-driven freeze-out lets a long-lived heavier fermion set the dark matter relic density while direct detection stays weak.

  5. A multi-axion model of inflation and dark matter

    hep-ph 2026-07 reject novelty 4.0 of 10

    A 300-mode Kaluza-Klein axion tower is proposed as a unified inflaton and dark-matter sector, but the lightest state's quoted lifetime contradicts the paper's own decay-rate formula.

  6. Beyond the Veil: Charting WIMP Territories at the Neutrino Floor

    hep-ph 2025-07 conditional novelty 4.0 of 10

    Freeze-in, early matter domination, and fast-expanding cosmologies keep many WIMP models within reach of next-generation direct detection experiments at the neutrino floor.

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