Zt and \gamma t production via top flavour-changing neutral couplings at the Fermilab Tevatron

Abstract

Associated single top production with a Z boson or a photon at large hadron colliders provides a precise determination of top flavour-changing neutral couplings. The best way to measure these couplings with the up quark at Tevatron is to search for events with three jets and missing energy or events with a photon, a charged lepton, a jet and missing energy. Other decay channels are also discussed.

Comments: LaTeX 20 pages, 7 PS figures. Version to be published in Phys. Lett. B with some typos corrected, minor numerical changes and a reference added