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

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.
Comment: Contribution to the NIC-Symposium 2010, 24-25 February 2010, Juelich, Germany; 8 pages including figures, latex2e, uses nic-series.cls