Excited lepton production at LEP and HERA |
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Authors: | K. Hagiwara S. Komamiya D. Zeppenfeld |
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Affiliation: | 1. Deutsches Elektronen-Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany 2. Physikalisches Institut der Universit?t, D-6900, Heidelberg, Federal Republic of Germany
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Abstract: | General expressions for single and pair production cross sections of excited leptons (e *,µ*,v *) are presented. Specific results are shown for a realisticSU(2)×U(1) invariant model. Pair production ine + e ? annihilation can measure anomalous magnetic moments of excited leptons. Single production ofe * is dominated by thet-channel γ exchange contribution which makes its detection feasible up to masses just below thee + e ? c.m. energy. Due to this small |t| enhancement effect, contributions from elastic and resonance scattering inep production ofe * are substantial. Realistic estimates of the excited lepton production cross section at HERA are given |
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