  Dilepton production in heavy ion collisions, in the Intermediate Mass Region
(IMR) has consistently shown an excess over theoretical estimates. An attempt
to understand this discrepancy between the observed dilepton pairs and the
theoretical estimate is made here through the production of the $\eta_c$ meson
and estimates obtained by NRQCD calculations. We find that $\eta_c$ production
offers a satisfactory quantitative picture for explaining the discrepancy.
