Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
; Ochanomizu Univ, Dept Phys, Tokyo 1128610, Japan
The heavier chargino decay could yield two charged leptons of different generations, owing to generation mixing of sneutrinos. We discuss the possibility of producing e and mu through this process in near future collider experiments. The analyses are made systematically in the supersymmetric extension of the standard model without assuming a specific scenario for the mixing. Production of the heavier chargino is evaluated in e(+)e(-) collisions. In the parameter region consistent with nonobservation of the radiative mu decay, sizable parts lead to a detectable branching ratio for the generation-changing decay of the heavier chargino.