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Sterile Neutrino Dark Matter from Freeze-In

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arxiv 1512.02751 v1 pith:673S4GRW submitted 2015-12-09 hep-ph astro-ph.CO

classification hep-phastro-ph.CO
keywords darkmatterneutrinosterilemechanismframeworksfreeze-inliterature
verification ladder T0 review T1 audit T2 compute T3 formal
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A sterile neutrino is a well-motivated and widely studied dark matter candidate. The most straightforward realization of sterile neutrino dark matter, through the Dodelson-Widrow mechanism, is now ruled out by a combination of X-ray and Lyman-\alpha measurements. An alternative production mechanism that is becoming increasingly popular in the literature is the freeze-in mechanism, involving frameworks where a feeble coupling to a particle - usually a scalar beyond the Standard Model - in the thermal bath results in a gradual accumulation of the sterile neutrino dark matter abundance. This article reviews the various motivations for realizing such frameworks in the literature, their common characteristic features, and phenomenological signatures.

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Cited by 3 Pith papers

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

  1. Photonic Freeze-In

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Dark matter can be produced by photon annihilation through a loop-generated F² operator, a new photonic freeze-in scenario that is testable at low reheat temperatures.

  2. Sterile Neutrino Dark Matter as a Probe of Inflationary Reheating

    hep-ph 2026-01 conditional novelty 5.0 of 10

    Inflaton decays during reheating can produce all of the observed sterile-neutrino dark matter with a branching ratio below 10^-4, evading X-ray bounds and making a future X-ray line a probe of the inflaton mass and re...

  3. Cosmic Colliders: High Energy Physics with First-Order Phase Transitions

    hep-ph 2024-12 conditional novelty 2.0 of 10

    Cosmic bubble collisions in runaway first-order phase transitions can, if the runaway regime holds, produce particles with masses far above the transition scale and energies approaching the Planck scale.

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