A charged fermionic mass eigenstate formed by mixing charged electroweak gauginos and higgsinos in a supersymmetric model. Its production and decay can yield leptons and missing transverse momentum when a stable neutral lightest state is present.
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A chargino is a hypothetical particle predicted by supersymmetry (SUSY), a theoretical framework that extends the Standard Model of particle physics. In supersymmetry, each known particle has a corresponding "superpartner" that differs in spin by \( \frac{1}{2} \). Charginos are the superpartners of the charged W and Higgs bosons.