Model dependence of the chargino mass bound from the CERN collider data

We examine the validity of the limit ($m_{W̃}$≳40 GeV) on the chargino mass that was inferred from the UA1 bound ($m_L$≥41 GeV) on the sequential heavy-lepton mass. This limit was obtained under the assumption that the supersymmetry-breaking gaugino masses are small ($m_{g̃}$≲50 GeV) so that the lightest neutralino (Z${̃}_1$) is dominantly a photino with $m_{\gamma ̃}$$m_{W̃}$ as small as 20–25 GeV is not excluded by the CERN collider data. Multilepton signals from gaugino decays are also commented upon.