Study of $\pi^0/\gamma$ efficiency using $B$ meson decays in the LHCb experiment

The reconstruction efficiency of photons and neutral pions is measured using the relative yields of reconstructed $B^+\to J/\psi K^{*+} (\to K^+\pi^0)$ and $B^+\to J/\psi K^+$decays. The efficiency is studied using the data set, corresponding to an integrated luminosity of $3~\mathrm{fb}^{-1}$, collected by the LHCb experiment in proton-proton collisions at the centre-of-mass energies of 7 and 8 $TeV$.