Eldar Ganiev

28 July 2020
40th International Conference on High Energy Physics

Abstract: The physics of charmless B decays is an essential portion of the Belle II program. The expected large yields of charmless B decays will enable significant advancements in the understanding of quark dynamics, including a world-leading determination of the CKM phase alpha/phi_2, a conclusive understanding of the so-called K-pi CP-puzzle, and a deeper insight into phenomenological models of non-perturbative QCD in heavy meson decays. We present preliminary results based on the Belle II sample collected in 2019-2020. First charmless B signals are reconstructed for a variety of two-body and multibody decays. Measurements of their branching fractions and CP-violating asymmetries are used as data-driven benchmarks of current and projected detector and reconstruction performance.