Search for W1Z2 production via trilepton final states in p bar p collisions at s=1.8 TeV

We have searched for associated production of the lightest chargino W1 and next-to-lightest neutralino Z2 of the minimal supersymmetric standard model in bar pp collisions at √s=1.8 TeV using the D0 detector at the Fermilab Tevatron collider. Data corresponding to an integrated luminosity of 12.5±0.7pb-1 were examined for events containing three isolated leptons. No evidence for W1Z2 pair production was found. Limits on σ(W1Z2)B(W1→lνZ1)B(Z2→ll KZ1) are presented. copyright 1996 The American Physical Society