2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39528We study chargino production e^+ e^- -> chi^+_1 chi^-_1 and the subsequent leptonic decay chi^-_1\to chi^0_1 e^- nu_e including the complete spin correlations between production and decay. We work out the advantages of polarizing the e^+ and e^- beams. We study in detail the polarized cross sections, the angular distribution and the forward--backward asymmetry of the decay electron. They can be used to determine the sneutrino mass m_{\tildeν_e}.14 pages, 17 postscript figures, latex using epsfigHigh Energy Physics - Phenomenologytext