a Search for Weakly Interacting Massive Particles in the Fermilab Tevatron Wide Band Neutrino Beam

A time-of-flight technique has been used to search for new weakly interacting massive neutral particles by exploiting the time structure of the Wide Band Neutrino beam at the Fermilab Tevatron. Event times were measured relative to the accelerator RF clock using high timing resolution scintillation counters in the 100 metric ton fiducial volume of the E733 target/calorimeter during the 1987 fixed target run. The experimental signature of a new particle candidate is an event with a measured event time inconsistent with the expected time structure of the neutrino beam. No such candidates were found. This null result has been used to set limits at the 90% confidence level on (a) heavy neutrino production from the decay of heavy quark states, (b) massive objects directly produced in 800 GeV/c pN interactions that are noninteracting but unstable with mean lifetimes between 10^ {-8} and 10^{-4}s and (c) directly produced massive objects that are stable but weakly interacting with interaction cross sections between 10^{-29} and 10^{-31}cm^2/nucleon. .