arXiv:1210.6524·v1·High Energy Physics — Lattice
B-physics from non-perturbatively renormalized HQET in two-flavour lattice QCD
Fabio Bernardoni (DESY)🇩🇪 · Benoit Blossier (CNRS and Paris U.)🇫🇷 · John Bulava (CERN)🇨🇭 · Michele Della Morte (Mainz U.)🇩🇪 · Patrick Fritzsch (Berlin Humboldt U.)🇩🇪 · Nicolas Garron (Trinity College)🇮🇪 · Antoine Gerardin (CNRS and Paris U.)🇫🇷 · Jochen Heitger (Muenster U.)🇩🇪 · Georg M. von Hippel (Mainz U.)🇩🇪 · Hubert Simma (DESY)🇩🇪
Abstract
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}.
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