Isolated Lepton Events at HERA: SUSY R-Parity Violation?
  Events with an isolated high $p_T$ lepton, a hadron jet and missing energy as observed in the H1 experiment at HERA, are potentially associated with R-parity violation in supersymmetric theories. However, stringent kinematic constraints must be fulfilled if the production of supersymmetric particles in R-parity violating scenarios were the correct path for explaining these puzzling events. A reference point \RF is specified for which these constraints are illustrated and implications of the supersymmetric interpretation for new classes of multi-lepton events are indicated. 
S.Y. Choi, J. Kalinowski, H.-U. Martyn, R. R\"uckl, H. Spiesberger,   P.M. Zerwas