Baryogenesis and Dark Matter from $B$ Mesons
  We present a new mechanism of Baryogenesis and dark matter production in
which both the dark matter relic abundance and the baryon asymmetry arise from
neutral $B$ meson oscillations and subsequent decays. This set-up is testable
at hadron colliders and $B$-factories. In the early Universe, decays of a long
lived particle produce $B$ mesons and anti-mesons out of thermal equilibrium.
These mesons/anti-mesons then undergo CP violating oscillations before quickly
decaying into visible and dark sector particles. Dark matter will be charged
under Baryon number so that the visible sector baryon asymmetry is produced
without violating the total baryon number of the Universe. The produced baryon
asymmetry will be directly related to the leptonic charge asymmetry in neutral
$B$ decays; an experimental observable. Dark matter is stabilized by an
unbroken discrete symmetry, and proton decay is simply evaded by kinematics. We
will illustrate this mechanism with a model that is unconstrained by di-nucleon
decay, does not require a high reheat temperature, and would have unique
experimental signals -- a positive leptonic asymmetry in $B$ meson decays, a
new decay of $B$ mesons into a baryon and missing energy, and a new decay of
$b$-flavored baryons into mesons and missing energy. These three observables
are testable at current and upcoming collider experiments, allowing for a
distinct probe of this mechanism.
