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 densit
y, is analyzed. It is shown that it describes the low-energy behavior
of a system of weakly interacting massive particles (WIMPs) from the l
eptonic sector of the minimal supersymmetric standard model. In this c
ase the effective coupling constant lambda is related to the Fermi con
stant G(F).