We report on the ALPHA Collaboration's lattice B-physics programme based on N_f=2 O(a) improved Wilson fermions and HQET, including all NLO effects in the inverse heavy quark mass, as well as non-perturbative renormalization and matching, to fix the parameters of the effective theory. Our simulations in large physical volume cover 3 lattice spacings a ~ (0.08-0.05) fm and pion masses down to 190 MeV to control continuum and chiral extrapolations. We present the status of results for the b-quark mass and the B_(s)-meson decay constants, f_B and f_{B_s}.
@article{arxiv.1210.6524,
title = {B-physics from non-perturbatively renormalized HQET in two-flavour lattice QCD},
author = {Fabio Bernardoni and Benoit Blossier and John Bulava and Michele Della Morte and Patrick Fritzsch and Nicolas Garron and Antoine Gerardin and Jochen Heitger and Georg M. von Hippel and Hubert Simma},
journal= {arXiv preprint arXiv:1210.6524},
year = {2015}
}
Comments
Presented at the 16th International Conference in Quantum Chromodynamics (QCD 2012), 2-7 July 2012, Montpellier, France; 7 pages including figures, latex2e, uses elsarticle.cls