Dark matter from baryon asymmetry
160 citations recorded by the source corpus.
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.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/10bf47293330a21607dceb70dc43de9c37edd74f
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In Astronomy and Astrophysics
In Nuclear and High Energy Physics
Citations in the corpus
- Gravitational probes of dark matter physics (2017, background): “This requires annihilation cross sections in the early Universe at least as large as those of a thermal relic [52], and so Λ−1ADM & 5× 10 −5 GeV−1.”
- Dark nuclei. I. Cosmology and indirect detection (2014, background): “Recent years have seen a resurgence in the study of ADM [13, 14, 62–75], and this has led to the realization of a large number of models which may generate a DM asymmetry through a variety of mechanisms.”