Search for single high tranverse momentum electrons from proton-antiproton collisions at 540 GeV collision energy (UA1 collaboration)

A search for large transverse momentum electrons accompanied by significant transverse missing energy (neutrino) has been performed on a sample of events accumulated during the last collider run, corresponding to an intefrated luminosity of 18 inverse nanobarns. Signal and backgrounds will be critically discussed and compared with leading theoretical ideas.