# $|V_{cb}|$ using lattice QCD

## TL;DR

This paper reviews how lattice QCD calculations of hadronic matrix elements are used to determine the quark flavor coupling $V_{cb}$ from semileptonic B meson decays within the Standard Model.

## Contribution

It provides a summary of the current status and short-term outlook for extracting $|V_{cb}|$ using lattice QCD methods.

## Key findings

- Current lattice QCD results inform $V_{cb}$ measurements.
- Progress in lattice calculations improves precision of $V_{cb}$.
- The review highlights future prospects for $|V_{cb}|$ determination.

## Abstract

Lattice QCD calculations of hadronic matrix elements allow one to draw inferences about quark flavor interactions from measurements of hadron decays. Within the context of the Standard Model, the magnitude of the charm-bottom quark coupling $V_{cb}$ can be determined from semileptonic decays such as $B\to D^{(*)}\ell\nu$. This brief review summarizes the present status and short-term outlook for determining $|V_{cb}|$ using lattice QCD.