Towards Precision B-physics from Non-Perturbative Heavy Quark Effective Theory

TL;DR

This paper discusses recent advances in non-perturbative lattice QCD methods for high-precision B-physics, focusing on effective theories for b-quarks and their application to determine b-quark mass.

Contribution

It highlights the concept, challenges, and progress in fully non-perturbative computations of B-meson physics using effective theories within lattice QCD.

Findings

Progress in non-perturbative lattice QCD computations for B-physics.

Results on b-quark mass in quenched approximation.

Status update in two dynamical flavour theory.

Abstract

We convey an idea of the significant recent progress, which opens up good perspectives for high-precision ab-initio computations in heavy flavour physics based on lattice QCD. Rather than surveying the latest results, this contribution focuses on the concept and the challenges of fully non-perturbative computations in the B-meson sector, where the b-quark is treated within an effective theory. We outline its use to determine the b-quark mass and report on the results obtained in the quenched approximation and on the status in the two dynamical flavour theory.