  Interpreting the excesses around 750 GeV in the diphoton spectra to be the
signal of a new heavy scalar decaying to photons, we point out the possibility
of looking for correlated signals with virtual photons. In particular, we
emphasize that the effective operator that generates the diphoton decay will
also generate decays to two leptons and a photon, as well as to four leptons,
independently of the new resonance couplings to $Z\gamma$ and $ZZ$. Depending
on the relative sizes of these effective couplings, we show that the virtual
diphoton component can make up a sizable, and sometimes dominant, contribution
to the total $2\ell \gamma$ and $4\ell$ partial widths. We also discuss
modifications to current experimental cuts in order to maximize the sensitivity
to these virtual photon effects. Finally, we briefly comment on prospects for
channels involving other Standard Model fermions as well as more exotic decay
possibilities of the putative resonance.
