Study of photon reconstruction efficiency using $B^{+}\to J/\psi K^{(\ast )+}$ decays in the LHCb experiment

Ekaterina Govorkova

The reconstruction efficiency of photons and neutral pions is measured using the relative yields of reconstructed $B^{+}\to J/\psi K^{\ast +}(\to K^{+}{\pi }^0)$ and $B^{+}\to J/\psi K^{+}$ decays.…