Inclusive determination of $|V_{cb}|$ at Belle

Abstract

We present the measurement of the first to fourth order moments of the four-momentum transfer squared, $q^2$, of inclusive $B\to X_c\ell \nu$ decays using the full Belle data set consisting of $711\mathrm{f}{\mathrm{b}}^{-1}$ of integrated luminosity at the ${\rm Y}(4S)$ resonance for $\ell =e,\mu$. The measured moments are crucial experimental inputs for a novel, data-driven approach to determine inclusive $|V_{cb}|$, which we implement in order to extract a preliminary value of $|V_{cb}|\times 10^3=41.7\pm 1.2$.

Contribution to the 2021 EW session of the 55th Rencontres de Moriond

References in corpus (1)

• Measurements of Partial Branching Fractions of Inclusive $B\to X_u{\ell }^{+}{\nu }_{\ell }$ Decays with Hadronic Tagging

Cited by in corpus (2)

• Three loop calculations and inclusive $V_{cb}$
• The forward-backward asymmetry and differences of partial moments in inclusive semileptonic B decays