000002173 001__ 2173
000002173 005__ 20201214105501.0
000002173 037__ $$aBELLE2-CONF-PROC-2020-020
000002173 041__ $$aeng
000002173 100__ $$aRacha Cheaib 
000002173 245__ $$aFirst Results on $V_{ub}$ and $V_{cb}$ with the Belle II experiment
000002173 260__ $$a$$c2020-12-03
000002173 300__ $$a6
000002173 520__ $$aPrecision measurements of $V_{ub}$ and $V_{cb}$   play a central role in tests of the CKM sector of the Standard Model and complement direct measurements of CP violation in B meson decays. In this talk, first studies for measuring $V_{ub}$ and $V_{cb}$  with semi-leptonic decays are presented using collision events recorded at the $\Upsilon(4S)$ resonance by the Belle II experiment. Belle II is located at the SuperKEKB accelerator complex near Tokyo in Japan, and started recording collision data in Spring 2019. We report the status of measuring branching fractions and kinematic properties of inclusive and exclusive  and  decays using untagged and tagged approaches using the currently available Belle II data set.
000002173 8560_ $$fracha.cheaib@desy.de
000002173 8564_ $$uhttps://docs.belle2.org/record/2173/files/BELLE2-CONF-PROC-2020-020.pdf
000002173 8564_ $$uhttps://docs.belle2.org/record/2173/files/FinalVersion.pdf