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Displaced heavy neutrinos from $Z'$ decays at the LHC by Chiang, Cheng-Wei; Cottin, Giovanna; Das, Arindam; Mandal, Sanjoy is a scholarly article available to read on EtoBox.

What is Displaced heavy neutrinos from $Z'$ decays at the LHC about?

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. We find that searches for at least one displaced vertex can cover a significant portion of the parameter space, with light-heavy neutrino mixings as low as $|V_{lN}|^2\approx 10^{-17}$, and $l=e,\mu$ accessible across GeV scale heavy neutrino masses.

Author

Chiang, Cheng-Wei; Cottin, Giovanna; Das, Arindam; Mandal, Sanjoy

Published

2019

Language

EN