Search for excited electrons using the ZEUS detector

This paper reports a search for excited electrons at the HERA electron-proton collider. In a sample corresponding to an integrated luminosity of 26 nb − , no evidence was found for any resonant state decaying into e − γ , ν W − or e − Z 0 . Limits on the coupling strength of an excited electron have been determined for masses between 45 and 225 GeV. This study also reports the observation of the wide-angle e γ Compton scattering process.

electron p: colliding beams
colliding beams: electron p
search for: composite
e*
decay: excited state
excited state: decay
mass
coupling
photon electron: Compton scattering
Compton scattering: photon electron

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