Search for excited electrons at HERA

Brian Cox, C. Adloff, V. Andreev, B. Andrieu, T. Anthonis, Michael Jones

    Research output: Contribution to journalArticlepeer-review


    A search for excited electron (e*) production is described in which the electroweak decays e* → eγ, e* → eZ and e* → v W are considered. The data used correspond to an integrated luminosity of 120 pb -1 taken in e ±p collisions from 1994 to 2000 with the H1 detector at HERA at centre-of-mass energies of 300 and 318 GeV. No evidence for a signal is found. Mass dependent exclusion limits are derived for the ratio of the couplings to the compositeness scale, f/Λ. These limits extend the excluded region to higher masses than has been possible in previous direct searches for excited electrons. © 2002 Published by Elsevier Science B.V.
    Original languageEnglish
    Pages (from-to)35-44
    Number of pages9
    JournalPhysics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
    Issue number1-2
    Publication statusPublished - 14 Nov 2002


    • Electroweak theory; Gamma ray (search for excited electron prodn. in which electroweak decays e* -> eg, e* -> eZ and e* -> nW)


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