Preparatory studies for a Time-Dependent CP Violation measurement of B0 to pi0 pi0

As a step towards measuring the mixing-induced CP violation parameter, $S_{\pi0\pi0}$ in $B^0 \to \pi^0 \pi^0$ decays, this thesis aims to achieve a better separation of photon conversions $\pi^0 \to \gamma (\to e^ + e^-) \gamma$ and Dalitz decays $\pi^0 \to e^+ e^- \gamma$ by training and evaluating a BDT.