  We propose a model for CP violating oscillations of neutral, heavy-flavored
baryons into antibaryons at rates which are within a few orders of magnitude of
their lifetimes. The flavor structure of the baryon violation suppresses
neutron oscillations and baryon number violating nuclear decays to
experimentally allowed rates. We also propose a scenario for producing such
baryons in the early Universe via the out-of-equilibrium decays of a neutral
particle, after hadronization but before nucleosynthesis. We find parameters
where CP violating baryon oscillations at a temperature of a few MeV could
result in the observed asymmetry between baryons and antibaryons. Furthermore,
part of the relevant parameter space for baryogenesis is potentially testable
at Belle II via decays of heavy flavor baryons into an exotic neutral fermion.
The model introduces four new particles: three light Majorana fermions and a
colored scalar. The lightest of these fermions is typically long lived on
collider timescales and may be produced in decays of bottom and possibly
charmed hadrons.
