  A class of boson-fermion stars, whose spin-0 and spin-1/2 constituents
interact through a U(1) current-current term in the Lagrangian density, is
analysed. It is shown that it describes the low-energy behavior of a system of
weakly interacting massive particles (WIMPs) from the leptonic sector of the
minimal supersymmetric standard model. In this case the effective coupling
constant $\lambda$ is related to the Fermi constant $G_F$.
