B-physics from HQET in two-flavour lattice QCD
  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. 
F. Bernardoni, B. Blossier, J. Bulava, M. Della Morte, P. Fritzsch, N.   Garron, A. G\'erardin, J. Heitger, G. von Hippel, H...
hep-lat