A higgsino is the Weyl spinor partner of a Higgs scalar field in a chiral superfield. After a supersymmetric Higgs mechanism, its combination along a broken gauge direction mixes with the gaugino in the resulting massive N=1 vector multiplet.
Articles by others on the same topic
The Higgsino is a theoretical particle in the context of supersymmetry (SUSY), a proposed extension of the Standard Model of particle physics. In supersymmetry, every known particle has a corresponding "superpartner" with different spin properties. The Higgs field is responsible for giving mass to elementary particles through the Higgs mechanism, and the Higgs boson is the particle associated with this field.