Searches for new quarks and leptons produced in Z-boson decay

Searches for new quarks and leptons produced in Z-boson decay

physical review letters 1989 Vol. 63 pp. 2447-
115
1989physicalsearches

Abstract

We have searched for events with new-particle topologies in 390 hadronic Z decays with the Mark II detector at the SLAC Linear Collider. We place 95%-confidence-level lower limits of 40.7 GeV/${c}^{2}$ for the top-quark mass, 42.0 GeV/${c}^{2}$ for the mass of a fourth-generation charge -(1/3 quark, and 41.3 GeV/${c}^{2}$ for the mass of an unstable Dirac neutral lepton.

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ID: 267847
Ref Key: 1989physicalsearches
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267847
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doi:10.1103/PhysRevLett.63.2447
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Scimatic Chain (ID: 481)
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