A Common Origin for Baryonic Visible Matter and Antibaryonic Dark Matter

Details A Common Origin for Baryonic Visible Matter and Antibaryonic Dark Matter A Common Origin for Baryonic Visible Matter and Antibaryonic Dark Matter

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aps..nws.h1001s&link_type=abstract

American Physical Society, 12th Annual Meeting of the Northwest Section of the APS, October 1-2, 2010, abstract #H1.001

Physics

Scientific paper

We present a novel mechanism, hylogenesis, 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.

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