title: Unified origin for baryonic visible matter and antibaryonic dark matter.
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 nonthermally 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.
authors.affiliation: Department of Physics, Brookhaven National Laboratory, Upton, New York 11973, USA.
authors.forename: Hooman
authors.initials: H
authors.lastname: Davoudiasl
authors.forename: David E
authors.initials: DE
authors.lastname: Morrissey
authors.forename: Kris
authors.initials: K
authors.lastname: Sigurdson
authors.forename: Sean
authors.initials: S
authors.lastname: Tulin