Doubly Charged Higgsino Pair Production and Decays in e+e- Collisions

Abstract

In supersymmetric grand unified theories, light higgsino multiplets generally exist in addition to the familiar chargino/neutralino multiplets of the minimal supersymmetric extension of the Standard Model. The new multiplets may include doubly charged states ${\tilde{\Delta }}^{\pm \pm }$ and ${\tilde{\delta }}^{\pm \pm }$. We study the properties and the production channels of these novel higgsinos in $e^{+}{e}^{-}$ and $\gamma \gamma$ collisions, and investigate how their properties can be analyzed experimentally.

Comments: LATEX, 25 pages, ps figures included