000002072 001__ 2072
000002072 005__ 20200804144005.0
000002072 037__ $$aBELLE2-TALK-CONF-2020-044
000002072 041__ $$aeng
000002072 088__ $$aBELLE2-TALK-DRAFT-2020-033
000002072 100__ $$aEldar Ganiev 
000002072 245__ $$aEarly charmless B decay physics at Belle II 
000002072 260__ $$a40th International Conference on High Energy Physics$$c2020-07-28
000002072 300__ $$amult. p
000002072 520__ $$aThe physics of charmless B decays is an essential portion of the Belle II program. The expected large yields of charmless B decays will enable significant advancements in the understanding of quark dynamics, including a world-leading determination of the CKM phase alpha/phi_2, a conclusive understanding of the so-called K-pi CP-puzzle, and a deeper insight into phenomenological models of non-perturbative QCD in heavy meson decays. We present preliminary results based on the Belle II sample collected in 2019-2020. First charmless B signals are reconstructed for a variety of two-body and multibody decays. Measurements of their branching fractions and CP-violating asymmetries are used as data-driven benchmarks of current and projected detector and reconstruction performance.
000002072 8560_ $$fdavid.jaffe@desy.de
000002072 8564_ $$uhttps://docs.belle2.org/record/2072/files/BELLE2-TALK-CONF-2020-044.pdf