Hadron colliders signatures of lepton number violation in the type II seesaw model

We examine the prospect of observing genuine lepton-number-violating (LNV) signals at hadron colliders in the context of the type II seesaw mechanism. The model features smoking gun signals involving same-sign di-leptons and jets that may be the primary observable channel in certain regions of the parameter space. The flavor composition of final-state charged leptons is related to the origin of neutrino masses and is correlated with other rare processes, such as neutrinoless double-beta decay. We review existing collider limits and provide sensitivity estimates from LNV signals at upcoming Large Hadron Collider runs, including nonzero mass splittings between triplet components.