We propose intensity interferometry with identical lepton pairs as an
efficient tool for the estimation of the source size of the expanding hot zone
produced in relativistic heavy ion collisions. This can act as a complementary
method to two photon interferometry. The correlation function of two electrons
with the same helicity has been evaluated for RHIC energies. The thermal shift
of the rho meson mass has negligible effects on the HBT radii.Comment: 5 pages and 2 figure