  Low-scale baryogenesis could be discovered at $B$-factories and the LHC. In
the $B$-Mesogenesis paradigm [G. Elor, M. Escudero, and A. E. Nelson, PRD 99,
035031 (2019), arXiv:1810.00880], the CP violating oscillations and subsequent
decays of $B$ mesons in the early Universe simultaneously explain the origin of
the baryonic and the dark matter of the Universe. This mechanism for baryo- and
dark matter genesis from $B$ mesons gives rise to distinctive signals at
collider experiments, which we scrutinize in this paper. We study CP violating
observables in the $B^0_q-\bar{B}_q^0$ system, discuss current and expected
sensitivities for the exotic decays of $B$ mesons into a visible baryon and
missing energy, and explore the implications of direct searches for a TeV-scale
colored scalar at the LHC and in meson-mixing observables. Remarkably, we
conclude that a combination of measurements at BaBar, Belle, Belle II, LHCb,
ATLAS and CMS can fully test $B$-Mesogenesis.
