Measurements of Inclusive $B \rightarrow X_u \ell \nu$ Decays

TL;DR

This paper reviews recent measurements of inclusive charmless semileptonic B meson decays, focusing on recoil techniques and presenting preliminary CKM matrix element estimates from multiple theoretical models.

Contribution

It provides a comprehensive overview of experimental results on B to X_u l nu decays using recoil methods and compares different theoretical calculations for |V_{ub}| extraction.

Findings

Preliminary averages of |V_{ub}| are presented.

Recoil techniques enable phase space region analysis.

Multiple theoretical models are used for |V_{ub}| estimation.

Abstract

Recent results on inclusive charmless semileptonic decays of B mesons are reviewed. Emphasis is given to measurements on the recoil of fully reconstructed B mesons, which allow to exploit several regions of phase space. Preliminary averages of the CKM matrix element $|V_{ub}|$ from the Heavy Flavour Working Group are shown, using four different theoretical calculations.