Search for Single Production of Leptoquarks in e + e annihilations at p s =192-202 GeV

A search for events with one jet and at most one isolated lepton (charged or neutral) has been performed using data taken at LEPII by the DELPHI detector. The data analysed was accumulated at center-of-mass energies ranging from 192 GeV to 202 GeV and corresponds to a total integrated luminosity of 227 pb 1 . Production of single scalar and vector leptoquarks was searched for. Limits at 95% condence level were derived within two dieren t frameworks (direct processes and resolved photon processes), on the masses and couplings of the leptoquark states.