Semi-Leptonic Decays of $B$-Mesons

TL;DR

This paper presents lattice QCD calculations of form factors for semi-leptonic B-meson decays, testing heavy-quark symmetry and determining key parameters like the Isgur-Wise function and |V_{cb}|.

Contribution

It provides the first quenched lattice QCD results for B-meson decay form factors, enabling precise tests of heavy-quark symmetry and extraction of fundamental parameters.

Findings

Form factors for B→D and B→D* decays obtained

Heavy-quark symmetry tests performed

|V_{cb}| and Isgur-Wise function determined

Abstract

Form factors relevant for semi-leptonic $B\to D,\ D^*$ decays are obtained in quenched lattice QCD. Tests of heavy-quark symmetry as well as determinations of the Isgur-Wise function and $|V_{cb}|$ are presented.