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arXiv · 1210.6524

B-physics from non-perturbatively renormalized HQET in two-flavour lattice QCD

Fabio Bernardoni·Benoit Blossier·John Bulava·Michele Della Morte·Patrick Fritzsch·Nicolas Garron·Antoine Gerardin·Jochen Heitger·Georg M. von Hippel·Hubert Simma
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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}.

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Fabio Bernardoni, Benoit Blossier, John Bulava, Michele Della Morte, Patrick Fritzsch, Nicolas Garron, Antoine Gerardin, Jochen Heitger, Georg M. von Hippel, Hubert Simma. 2012-10-24. B-physics from non-perturbatively renormalized HQET in two-flavour lattice QCD. https://doi.org/10.1016/j.nuclphysbps.2012.12.010

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