  We compute the modification of the photon self-energy due to dynamical
diquark fluctuations developed near the critical temperature of the color
superconductivity through the Aslamasov-Larkin, Maki-Thompson and density of
states terms, which are responsible for the paraconductivity in metals at
vanishing energy and momentum. It is shown that the rate has a significant
enhancement at low invariant-mass region over a rather wide range of
temperature in the normal phase. This enhancement is worth exploration in the
relativistic heavy-ion collisions, which may thereby reveal the significance of
the diquark fluctuations in dense quark matter.
