"Figure6 - Majorana electron" of "Search for long-lived heavy neutral leptons decaying in the CMS muon detectors in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

Expected and observed upper 95% CL limits on |VNe|2 as functions of the HNL mass(mN) for a Majorana HNL. For these limit calculations, the HNL is assumed to mix with a single lepton flavor state only. The difference between the expected and observed limits on |VNμ|2 are not visible in this figure.