A Search for Excited Fermions at HERA
H1 Collaboration, C. Adloff
Abstract
A search for excited fermions f* of the first generation in e+p scattering at the collider HERA is presented using H1 data with an integrated luminosity of 37 pb(-1). All electroweak decays of excited fermions, f* -> f gamma, f W, f Z are considered and all possible final states resulting from the Z or W hadronic decays or decays into leptons of the first two generations are taken into account. No evidence for f* production is found. Mass dependent exclusion limits on cross-sections and on the ratio of coupling constants to the compositeness scale are derived.
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