Search for Heavy Isosinglet Neutrino in e+e- Annihilation at LEP

Abstract

We report on a search for the first generation heavy neutrino that is an isosinglet under the standard SU(2)_L gauge group. The data collected with the L3 detector at center-of-mass energies between 130 GeV and 208 GeV are used.The decay channel N_e --> eW is investigated and no evidence is found for a heavy neutrino, N_e, in a mass range between 80 GeV and 205 GeV. Upper limits on the mixing parameter between the heavy and light neutrino are derived.

References in corpus (4)

• The Precision Monte Carlo Event Generator KK For Two-Fermion Final States In e+e- Collisions
• Search for Neutral Heavy Leptons in a High-Energy Neutrino Beam
• Search for heavy neutrinos mixing with tau neutrinos
• Search for Heavy Isosinglet Neutrinos in e${}^{+}$e${}^{-}$ Annihilation at 130$<\sqrt{s}<$189 GeV

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