Speaker
Description
The Belle II experiment at the SuperKEKB asymmetric e+e- collider in High Energy Accelerator Research Organization (KEK, Tsukuba, Japan) is searching for CP asymmetries in different rare decays, as well as a new physics beyond the standard model, and aims to collect a high statistics data set corresponding to an integrated luminosity of 50 $ab^{-1}$ in order to search. The Belle II Aerogel Ring Imaging Cherenkov (ARICH) detector’s response in terms of loglikelihood functions are studied using decay samples of $D^{*+} \rightarrow D^{0}+\pi^{+}$ and $D^{*-} \rightarrow \bar{D}^{0}+\pi^{-}$ resonances. The detection efficiency of the detector as well as the mis-identification rates as a function of a particle momentum and the polar angle will be presented. The experimental data will be shown in comparison of the relevant Monte Carlo simulations.
