Displaced heavy neutrinos from $Z'$ decays at the LHC

Understand

We study the LHC sensitivity to probe a long-lived heavy neutrino $N$ in the context of $Z'$ models.

• We focus on displaced vertex signatures of $N$ when pair produced via a $Z'$, decaying to leptons and jets inside the inner trackers of the LHC experiments.
• We explore the LHC reach with current long-lived particle search strategies for either one or two displaced vertices in association with hadronic tracks or jets.
• We focus on two well-motivated models, namely, the minimal $U(1)_{B-L}$ scenario and its $U(1)_{X}$ extension.