English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

This proceeding summarizes recent measurements of theCabibbo-Kobayashi-Maskawa (CKM) matrix elements $|V_{cb}|$ and $|V_{ub}|$ atthe Belle and Belle~II experiments. It provides insights derived from bothexclusive and inclusive determinations. Preliminary results from Belle~II arediscussed, focusing on $B^0\to D^{*-}\ell^+ \nu$ and $B^{0} \to \pi^{-}\ell^{+} \nu$ utilizing $189 \, \mathrm{fb}^{-1}$ data collected at the$\Upsilon(4S)$ resonance. This reveals the derived branching fractions and$|V_{xb}|$. The shape measurement of $B \to D^{*} \ell \nu$ at Belle extracted$|V_{cb}|$ employing new lattice-QCD calculations as input and providedadditional tests on the universality of light lepton flavors. In the realm ofinclusive decay, the measurement for $|V_{ub}|$ and the differential spectra of$B \to X_{u} \ell \nu$ decays have been performed. This presentation alsoencapsulates the new analyses of$|V_{ub}|^{\mathrm{excl}}/|V_{ub}|^{\mathrm{incl}}$ and$|V_{ub}|^{\mathrm{incl}}/|V_{cb}|^{\mathrm{incl}}$ ratios.

Measurements of $|V_{cb}|$ and $|V_{ub}|$ from Belle and Belle II