000003615 001__ 3615
000003615 005__ 20230525204242.0
000003615 037__ $$aBELLE2-TALK-CONF-2023-065
000003615 041__ $$aeng
000003615 088__ $$aBELLE2-TALK-DRAFT-2023-060
000003615 100__ $$aLau Tak-Shun
000003615 245__ $$aRecent Belle II results on semileptonic B decays and LFU tests
000003615 260__ $$a34th Rencontres de Blois 2023 - Particle Physics and Cosmology$$c2023-05-14
000003615 300__ $$amult. p
000003615 520__ $$aSemileptonic B decays allow to determine the magnitudes of the CKM matrix parameters |V_cb| and |V_ub|, two fundamental parameters of the SM flavor sector. In addition, the observed rate of semitauonic B decays has been consistently above expectations since these decays were first measured. At Belle II these measurements use both exclusive decays such as B -> D*lnu and B -> pilnu, and inclusive X_clnu or X_ulnu final states restricted in phase space. The low-background collision environment at Belle II, along with the possibility of partially or fully reconstructing one of the two B mesons in the event, offer high precision. Recent results on |V_cb| and |V_ub| are presented along with recent Belle II results on lepton flavor universality tests.
000003615 8560_ $$fdjaffe@bnl.gov
000003615 8564_ $$uhttps://docs.belle2.org/record/3615/files/BELLE2-TALK-CONF-2023-065.pdf