Tau decays into kaon from DELPHI

Abstract A study of the production of charged and neutral kaons in tau decays has been performed using the data sample collected at LEP1 by the DELPHI detector. The good performance of the DELPHI Ring Imaging CHerenkov detector allows kaon identification both in one-prong and three-prong topologies. Several inclusive and exclusive branching ratios for channels containign one or two kaons in the final state have been determined.