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    Mass limits for excited electrons and muons from Z0 decay (English)

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    In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics ; 247 , 1 ; 177-184  ; 1990
    • ISSN:
      0370-2693
    • Article (Journal)  /  Electronic Resource

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    Abstract We searched for excited electrons and muons from Z0 decay in the channels ee→eeγ, ee→eeγγ, ee→(e)eγ, ee→μμγ, ee→μμγγ. using the L3 detector at LEP. The lower mass limit for e∗ is 45.0 GeV and for μ∗ 45.3 GeV. The upper limits of ℓℓ∗Z0 and ℓℓ∗γ couplings at 95% CL have been determined up to mℓ∗ close to the Z0 mass.

    Table of contents – Volume 247, Issue 1

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    The tables of contents are generated automatically and are based on the data records of the individual contributions available in the index of the TIB portal. The display of the Tables of Contents may therefore be incomplete.

    1
    Rotational intensity rules in the pseudo SU(3) scheme
    Warner, D.D. / Van Isacker, P. et al. | 1990
    5
    Pair creation in a flux tube
    Schönfeld, Th. / Schäfer, A. / Müller, B. / Sailer, K. / Reinhardt, J. / Greiner, W. et al. | 1990
    13
    Wormhole in the Einstein-Yang-Mills theory
    You-Gen, Shen / Zhen-Qiang, Tan et al. | 1990
    16
    Quantum mechanics and the cosmological axion bound
    Burton, Joshua W. / Carlson, Eric D. et al. | 1990
    21
    The Casimir energy of a stiff p-brane
    Odintsov, Sergei D. et al. | 1990
    25
    Calabi-Yau supermoduli space, field strength duality and mirror manifolds
    Ferrara, Sergio / Bodner, Mark / Cadavid, Ana Cristina et al. | 1990
    31
    Non-perturbative divergence in critical string theory
    Brustein, R. / De Alwis, S.P. et al. | 1990
    36
    Spin sums, fusion rules and correlators by filling
    Spiegelglas, Mordechai et al. | 1990
    41
    Gauge fixing: chiral model versus string theory
    Demichev, A.P. / Iofa, M.Z. et al. | 1990
    45
    A supertwistor description of the massless superparticle in ten-dimensional superspace
    Berkovits, Nathan et al. | 1990
    50
    Z7 phenomenology
    Casas, J.A. / de la Macorra, A. / Mondragón, M. / Muñoz, C. et al. | 1990
    57
    Nonperturbative analysis of the three matrix model
    Kunitomo, Hiroshi / Odake, Satoru et al. | 1990
    64
    Topological supergravity in two dimensions
    Montano, David / Aoki, Kenichiro / Sonnenschein, Jacob et al. | 1990
    71
    Non-perturbative 2D quantum gravity and the generalized KdV hierarchy
    Awada, Moustafa A. / Qiu, Zongan et al. | 1990
    75
    Unitarity restoration in the multi-instanton process
    Aoyama, Hideaki / Kikuchi, Hisashi et al. | 1990
    81
    Covariant non-abelian anomalous commutators
    Dunne, G.V. / Trugenberger, C.A. et al. | 1989
    88
    Large corrections to electroweak parameters in technicolor theories
    Holdom, B. / Terning, J. et al. | 1990
    93
    Two-loop QED corrections to Bhabha scattering near the Z0
    Aversa, F. / Greco, M. / Montagna, G. / Nicrosini, O. et al. | 1990
    101
    The importance of phase space dimension in the intermittency analysis of multi hadron production
    Ochs, Wolfgang et al. | 1990
    107
    Superheavy toponium production at multi-TeV colliders
    Inazawa, H. / Morii, T. et al. | 1990
    113
    Production of the charmed baryon Λ+ c in π−Cu and K−Cu interactions at 230 GeV
    Barlag, S. / Becker, H. / Böhringer, T. / Bosman, M. / Castillo, V. / Chabaud, V. / Damerell, C. / Daum, C. / Dietl, H. / Gillman, A. et al. | 1990
    121
    Measurement of Ξc production in e+e− annihilation at 10.5 GeV center-of-mass energy
    Albrecht, H. / Ehrlichmann, H. / Harder, G. / Krüger, A. / Nau, A. / Nilsson, A.W. / Nippe, A. / Oest, T. / Reidenbach, M. / Schäfer, M. et al. | 1990
    127
    Antiproton—proton elastic scattering at s =1.8 TeV from |t| = 0.034 to 0.65 (GeV/c)2
    Amos, N.A. / Avila, C. / Baker, W.F. / Bertani, M. / Block, M.M. / Dimitroyannis, D.A. / Eartly, D.P. / Ellsworth, R.W. / Giacomelli, G. / Gomez, B. et al. | 1990
    131
    A new measurement of the cross section of the inverse muon decay reaction νμ + e− → μ− + νe
    Geiregat, D. / Wilquet, G. / Binder, U. / Burkard, H. / Dore, U. / Flegel, W. / Grote, H. / Mouthuy, T. / Øveras, H. / Panman, J. et al. | 1990
    137
    A study of intermittency in hadronic Z0 decays
    Abreu, P. / Adam, W. / Adami, F. / Adye, T. / Alexeev, G.D. / Allaby, J.V. / Allen, P. / Almehed, S. / Alted, F. / Alvsvaag, S.J. et al. | 1990
    148
    Search for scalar quarks in Z0 decays
    Abreu, P. / Adam, W. / Adami, F. / Adye, T. / Alexeev, G.D. / Allaby, J.V. / Allen, P. / Almehed, S. / Alted, F. / Alvsvaag, S.J. et al. | 1990
    157
    A search for sleptons and gauginos in Z0 decays
    Abreu, P. / Adam, W. / Adami, F. / Adye, T. / Alexeev, G.D. / Allaby, J.V. / Allen, P. / Almehed, S. / Alted, F. / Alvsvaag, S.J. et al. | 1990
    167
    A comparison of jet production rates on the Z0 resonance to perturbative QCD
    Abreu, P. / Adam, W. / Adami, F. / Adye, T. / Alexeev, G.D. / Allaby, J.V. / Allen, P. / Almehed, S. / Alted, F. / Alvsvaag, S.J. et al. | 1990
    177
    Mass limits for excited electrons and muons from Z0 decay
    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
    v
    Editorial Board
    | 1990

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