Scientific article
English

A search for heavy charged and neutral leptons from Z0 decays

ContributorsL3 Collab.
Published inPhysics letters. B, vol. 251, no. 2, p. 321-330
Publication date1990
Abstract

We have searched for charged and neutral leptons. We exclude stable Dirac neutrinos below 42.8 GeV and stable Majorana neutrinos below 34.8 GeV. From a search for unstable neutrinos we exclude masses below 46.4 GeV (Dirac) and below 45.1 GeV (Majorana). We exclude all masses of sequential charged and neutral leptons, except if both masses are larger than 42.8 GeV (for stable Dirac neutrinos). All mass limits correspond to 95% CL.

Keywords
  • Electron positron: colliding beams
  • Colliding beams: electron positron
  • Electron positron: annihilation
  • Annihilation: electron positron
  • Z0: electroproduction
  • Electroproduction: Z0
  • Z0: leptonic decay
  • Leptonic decay: Z0
  • Z0: width
  • Heavy lepton: search for
  • Neutrino/L: search for
  • Heavy lepton: mass
  • Mass: heavy lepton
  • Neutrino/L: mass
  • Mass: neutrino/L
  • Lower limit
  • Neutrino: Dirac
  • Neutrino: Majorana
  • Heavy lepton: decay
  • Decay: heavy lepton
  • Neutrino/L: decay
  • Decay: neutrino/L
  • Final state: (lepton missing-energy)
  • (lepton missing-energy): final state
  • L3
  • Experimental results
  • CERN LEP Stor
  • 88.2-94.2 GeV-cms
Citation (ISO format)
L3 Collab. A search for heavy charged and neutral leptons from Z0 decays. In: Physics letters. B, 1990, vol. 251, n° 2, p. 321–330. doi: 10.1016/0370-2693(90)90943-z
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Journal ISSN0370-2693
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