Search for the Supersymmetric Partners of theZ0andW±

Abstract

We report mass limits on the ${\tilde{Z}}^0$ and ${\tilde{W}}^{\pm }$, supersymmetric partners of the $Z^0$ and $W^{\pm }$, respectively, using the MARK-J detector at PETRA. The experimental signatures in both cases are acoplanar lepton pairs with missing energy. For the ${\tilde{W}}^{\pm }$, an additional signature is a single energetic lepton. No evidence is found for either the ${\tilde{Z}}^0(M_{{\tilde{Z}}^0}<35\mathrm{}\mathrm{GeV})$ or the ${\tilde{W}}^{\pm }(M_{\tilde{W}}<25\mathrm{}\mathrm{GeV})$.