SUSY particles production in neutral current processes at HERA energy

Abstract

Supersymmetric (SUSY) particle production processes at HERA: (1)$e^ - p \to \tilde e^ - \tilde qX and (2)e^ - p \to \tilde e^ - \tilde \gamma qX$ followed by the selectron decay$\tilde e^ - \to e^ - \tilde \gamma$ with longitudinally polarized electron beam are examined. We found that the accomplanarity cut will be relevant to the backgrounde ⁻ p→e ⁻ qX suppression. It is our findings that thex-distribution serves to distinguish the process (1) from (2) and the left-right asymmetry using longitudinally polarized electron beam is an appropriate observable to determine the mass difference of left-and right-handed selectron.