Hylogenesis: A Unified Origin for Baryonic Visible Matter and Antibaryonic Dark Matter
High Energy Physics - Phenomenology
2010-12-03 v3 Cosmology and Nongalactic Astrophysics
Abstract
We present a novel mechanism for generating both the baryon and dark matter densities of the Universe. A new Dirac fermion X carrying a conserved baryon number charge couples to the Standard Model quarks as well as a GeV-scale hidden sector. CP-violating decays of X, produced non-thermally in low-temperature reheating, sequester antibaryon number in the hidden sector, thereby leaving a baryon excess in the visible sector. The antibaryonic hidden states are stable dark matter. A spectacular signature of this mechanism is the baryon-destroying inelastic scattering of dark matter that can annihilate baryons at appreciable rates relevant for nucleon decay searches.
Keywords
Cite
@article{arxiv.1008.2399,
title = {Hylogenesis: A Unified Origin for Baryonic Visible Matter and Antibaryonic Dark Matter},
author = {Hooman Davoudiasl and David E. Morrissey and Kris Sigurdson and Sean Tulin},
journal= {arXiv preprint arXiv:1008.2399},
year = {2010}
}
Comments
Footnote 1 restored after omission in v2; no other corrections