700 800 900 1000 1100 Mass GLYPH<LBracket1> GeV GLYPH<RBracket1> 2 4 6 8 Cross Section GLYPH<LBracket1> fb GLYPH<RBracket1> FIG. 1: Pair production cross sections at the LHC as a function of heavy lepton mass: pp → χ $^{−}$χ + (solid blue), pp → χ $^{0}$¯ χ 0 (dashed brown), pp → χ $^{+}$χ0 (solid orange) and pp → χ $^{−}$¯ χ 0 (solid green). The cross sections are given for a single heavy generation. B. Signature Most studies of heavy vector-like leptons assume no new Yukawa interaction, so that the neutral heavy leptons are stable. This improves the possibility of detection and allows for a variety of detection strategies [28] with an LHC mass reach of ∼ 1 T eV . In our case, however, the heavy leptons decay to SM leptons and electroweak gauge bosons or Higgs particles, leading to final states with multiple leptons and light jets. In the case of a light Higgs decaying predominantly into b ¯ it is also possible to have heavy b jets, otherwise the Higgs decays into pairs of electroweak gauge bosons allowing for many particles in the final state. Although the decay products described above seem complicated, the lack of final state neutrinos (except from W and Z decays) allows for a detection strategy based on reconstruction of the heavy lepton mass. The process that we are looking at is where ℓ stands for e or µ . The relevant diagram is shown in Fig. 2. The main signature 8 pp → χ $^{+}$χ$^{0}$, (3.1) χ + → ℓ + 1 Z $^{0}$/h$^{0}$, Z $^{0}$/h0 → jets , χ 0 → ℓ ∓ 2 W $^{±}$, W ± → νℓ ± 3 ,