B-physics from HQET in two-flavour lattice QCD

A. G\'erardin; B. Blossier; F. Bernardoni; G. von Hippel; H. Simma; J. Bulava; J. Heitger; M. Della Morte; N. Garron; P. Fritzsch

arxiv: 1210.7932 · v1 · pith:6OIIPH4Knew · submitted 2012-10-30 · ✦ hep-lat

B-physics from HQET in two-flavour lattice QCD

F. Bernardoni , B. Blossier , J. Bulava , M. Della Morte , P. Fritzsch , N. Garron , A. G\'erardin , J. Heitger

show 3 more authors

G. von Hippel H. Simma R. Sommer

This is my paper

classification ✦ hep-lat

keywords hqetlatticestatableall-to-allanalysisapproachb-meson

0 comments

read the original abstract

We present our analysis of B physics quantities using non-perturbatively matched Heavy Quark Effective Theory (HQET) in Nf= 2 lattice QCD on the CLS ensembles. Using all-to-all propagators, HYP-smeared static quarks, and the Generalized Eigenvalue Problem (GEVP) approach with a conservative plateau selection procedure, we are able to systematically control all sources of error. With significantly increased statistics compared to last year, our preliminary results are mb (mb) = 4.22(10)(4)z GeV for the MS b-quark mass, and fB = 193(9)stat (4)_\chi MeV and fBs = 219(12)stat MeV for the B-meson decay constants.

This paper has not been read by Pith yet.

B-physics from HQET in two-flavour lattice QCD

discussion (0)