A Search for Excited Fermions in e + pCollisions at HERAZEUS

Abstract

Using the ZEUS detector at HERA, we have searched for heavy excited states of electrons, neutrinos, and quarks in e + p collisions at a center-of-mass energy of 300 GeV. With an integrated luminosity of 9.4 pb ?1 , no evidence was found for electroweak production and decay of such states. Limits on the production cross section times branching ratio and on… (More)

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