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    A search for heavy charged and neutral leptons from Z0 decays (English)

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    In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics ; 251 , 2 ; 321-330  ; 1990
    • ISSN:
      0370-2693
    • Article (Journal)  /  Electronic Resource

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    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.

    Table of contents – Volume 251, Issue 2

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    229
    Compact to noncompact transition with application to nuclear collective levels
    Mukerjee, Madhusree et al. | 1990
    235
    A consistent description of momentum-regularized solitonic solutions in the Nambu-Jona-Lasinio model
    Blotz, A. / Döring, F. / Meissner, Th. / Goeke, K. et al. | 1990
    241
    Meson exchange current corrections to magnetic moments in quantum hadro-dynamics
    Morse, T.M. / Price, C.E. / Shepard, J.R. et al. | 1990
    245
    Inelastic and transfer reactions in 92Mo+255 MeV 60Ni collisions studied by γγ coincidences
    Broda, R. / Quader, M.A. / Daly, P.J. / Janssens, R.V.F. / Khoo, T.L. / Ma, W.C. / Drigert, M.W. et al. | 1990
    250
    Electric monopole with internal magnetic-monopole-like structure
    Davidson, Aharon / Guendelman, E.I et al. | 1990
    254
    Partition function for the N=2 superstring on the torus
    Aldazabal, Gerardo / Allekotte, Ingomar / Bonini, Marisa / Nuñez, Carmen et al. | 1990
    260
    Orthogonal-polynomial structures and fusion algebras of rational conformal field theories
    Caselle, M. / Ponzano, G. / Ravani, F. et al. | 1990
    266
    Consistent and covariant gauge anomalies as solutions of the same extended algebraic problem
    Bassetto, A. / Giacconi, P. / Griguolo, L. / Soldati, R. et al. | 1990
    273
    A model for spontaneous R parity breaking
    Masiero, A / Valle, J.W.F et al. | 1990
    279
    Shifting the Weyl anomaly to the chirally split diffeomorphism anomaly in two dimensions
    Knecht, M. / Lazzarini, S. / Thuillier, F. et al. | 1990
    284
    Pomeron and odderon in QCD and a two dimensional conformal field theory
    Lipatov, L.N. et al. | 1990
    288
    Nuclear forces from chiral lagrangians
    Weinberg, Steven et al. | 1990
    293
    Contributions of off-shell top quarks to decay processes
    Grau, A. / Pancheri, G. / Philips, R.J.N. et al. | 1990
    299
    Higher order corrections to the forward-backward asymmetry
    Beenakker, W. / Berends, F.A. / van der Marck, S.C. et al. | 1990
    305
    Role of the spin-flip flavour mechanism in the solar neutrino deficit
    Pulido, João et al. | 1990
    311
    Search for the neutral Higgs bosons of the minimal supersymmetric standard model from Z0 decays
    Adeva, B. / Adriani, O. / Aguilar-Benitez, M. / Akbari, H. / Alcaraz, J. / Aloisio, A. / Alverson, G. / Alviggi, M.G. / An, Q. / Anderhub, H. et al. | 1990
    321
    A search for heavy charged and neutral leptons from Z0 decays
    Adeva, B. / Adriani, O. / Aguilar-Benitez, M. / Akbari, H. / Alcaraz, J. / Aloisio, A. / Alverson, G. / Alviggi, M.G. / An, Q. / Anderhub, H. et al. | 1990

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