Long-lived heavy neutral leptons at the LHC
Prof. Dr. Martin Hirsch (University Valencia, Spain)

Long-lived particles (LLPs) have attracted considerable attention in the past few years, in particular because several new "far"
detectors have been proposed at the LHC. In this talk, I will discuss heavy neutral leptons (a.k.a. right-handed neutrinos).
Due to their connection to neutrino mass generation HNLs are well-motivated LLPs. After introducing minimal HNLs and studying prospects for discovery at the LHC, I will turn to HNLs in effective field theory (EFT). EFTs are well suited to study non-minimal extension of the SM in the absence of new resonances at the LHC.
The effects of non-renormalizable operators on prospects for HNLs discovery will be presented in some detail.