  We propose and investigate a novel, minimal, and experimentally testable
framework for baryogenesis, dubbed dexiogenesis, using baryon number violating
effective interactions of right-handed Majorana neutrinos responsible for the
seesaw mechanism. The distinct LHC signature of our framework is same-sign top
quark final states, possibly originating from displaced vertices. The region of
parameters relevant for LHC phenomenology can also yield concomitant signals in
nucleon decay experiments. We provide a simple ultraviolet origin for our
effective operators, by adding a color-triplet scalar, which could ultimately
arise from a grand unified theory.
