Inclusive and decays: current status and future prospects

Matteo Fael; Markus Prim; K. Keri Vos

doi:10.1140/epjs/s11734-024-01090-w

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2023 Impact factor 2.6

Special Topics

b-Quark Physics as a Precision Laboratory: Present Status and Future Prospects

Open Access

Eur. Phys. J. Spec. Top. (2024) 233: 325-346
https://doi.org/10.1140/epjs/s11734-024-01090-w

Review

Inclusive $B \to X_{c} ℓ {\bar{ν}}_{ℓ}$ $B\rightarrow X_c \ell {\bar{\nu }}_\ell$ and $B \to X_{u} ℓ {\bar{ν}}_{ℓ}$ $B\rightarrow X_u \ell {\bar{\nu }}_\ell$ decays: current status and future prospects

Matteo Fael¹, Markus Prim² and K. Keri Vos³^,4^c

¹ Theoretical Physics Department, CERN, 1211, Geneva, Switzerland
² Physikalisches Institut, University of Bonn, Nußallee 12, 53115, Bonn, Germany
³ Gravitational Waves and Fundamental Physics (GWFP), Maastricht University, Duboisdomein 30, 6229 GT, Maastricht, The Netherlands
⁴ Nikhef, Science Park 105, 1098 XG, Amsterdam, The Netherlands

^c k.vos@maastrichtuniversity.nl

Received: 4 December 2023
Accepted: 5 January 2024
Published online: 5 February 2024

Abstract

The inclusive semileptonic $B \to X_{c} ℓ {\bar{ν}}_{ℓ}$ $B\rightarrow X_c \ell {\bar{\nu }}_\ell$ and $B \to X_{u} ℓ {\bar{ν}}_{ℓ}$ $B\rightarrow X_u \ell {\bar{\nu }}_\ell$ decays allow for the extraction of the CKM elements $| V_{cb} |$ $|V_{cb}|$ and $| V_{ub} |$ $|V_{ub}|$ , respectively. These extractions are based on the Heavy-Quark Expansion, where recent progress on both the experimental and theoretical side allow for impressively precise results. We review the recent developments in the study of inclusive decays and give an outlook for the future.

© The Author(s) 2024

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