  In the context of TeV-scale lepton number violating (LNV) interactions, we
illustrate the interplay between leptogenesis, neutrinoless double beta
($0\nu\beta\beta$) decay, and LNV searches at proton-proton colliders. Using a
concrete model for illustration, we identify the parameter space where standard
thermal leptogenesis is rendered unviable due to washout processes and show how
$0\nu\beta\beta$ decay and $pp$ collisions provide complementary probes. We
find that the new particle spectrum can have a decisive impact on the relative
sensitivity of these two probes.
