Fake Rate Estimations in the ZH $\rightarrow$ $\gamma\gamma D$ Decay

Many beyond the Standard Model (SM) theories predict the existence of a dark photon which can couple to the SM Higgs. One such way to search for this signature is with the production of a Higgs boson in association to a Z boson where the Z decays to leptons and the Higgs decays to an SM photon and a dark photon. The decay of a WZ boson pair however mimics this dark photon signature. In order to take this into account, we look at the rate at which electrons are misidentified as photons, or the fake rate (FR). Here, we discuss this FR applied as a background to the ZH $\rightarrow$ $\gamma\gamma D$ decay region using data from the LHC 2015/2016 run.