Speaker
Taichiro Koga
Description
Semileptonic $B$ decays allow to determine the magnitudes of the CKM matrix parameters $|V_{cb}|$ and $|V_{ub}|$, two fundamental parameters of the standard model flavor sector. At Belle II these measurements use both exclusive decays such as $B\to D^*\ell\nu$ and $B\to\pi\ell\nu$, or inclusive $X_c\ell\nu$ or $X_u\ell\nu$ final states restricted in phase space. The low-background collision environment 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 $|V_{ub}|$, along with a novel measurement of lepton-$q^2$ moments are presented, along with future perspectives.
| In-person participation | No |
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