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Dark Matter from Baryon Asymmetry

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arxiv hep-ph/0411133 v2 pith:7D62TU3B submitted 2004-11-09 hep-ph astro-ph

classification hep-phastro-ph
keywords darkmatterbaryonasymmetrybaryonicdensitieslong-livedparticle
verification ladder T0 review T1 audit T2 compute T3 formal
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The measured densities of dark and baryonic matter are surprisingly close to each other, even though the baryon asymmetry and the dark matter are usually explained by unrelated mechanisms. We consider a scenario where the dark matter S is produced non-thermally from the decay of a messenger particle X, which carries the baryon number and compensates for the baryon asymmetry in the Universe, thereby establishing a connection between the baryonic and dark matter densities. We propose a simple model to realize this scenario, adding only a light singlet fermion S and a colored particle X which has a mass in the O(TeV) range and a lifetime to appear long-lived in collider detector. Therefore in hadron colliders the signal is similar to that of a stable or long-lived gluino in supersymmetric models.

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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. Composite asymmetric dark matter with a dark photon portal: Multimessenger tests

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Decaying composite dark matter in the 1 to 10 GeV mass range is most strongly constrained by AMS-02 positron data, needing lifetimes above roughly 10^26 seconds.

  2. Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states

    hep-ph 2024-12 conditional novelty 6.0 of 10

    A published asymmetric dark matter mechanism from semi-annihilation is shown to violate unitarity; a corrected two-species model with long-lived final states can produce the observed relic density.

  3. Direct Detection and Cosmological Constraints of Dark Matter with Dark Dipoles

    hep-ph 2026-02 conditional novelty 5.0 of 10

    Cosmological and direct-detection data already exclude most sub-GeV dark-matter parameter space for dark-photon magnetic dipole interactions, with semiconductor detectors needed to probe the remaining electric-dipole ...

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