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arxiv: 1309.1074 · v1 · pith:4NNU57DAnew · submitted 2013-09-04 · ✦ hep-lat

B-physics with N_f=2 Wilson fermions

F.Bernardoni , B.Blossier , J. Bulava , M. Della Morte , P. Fritzsch , N. Garron , A. Gerardin , J. Heitger
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G. von Hippel H. Simma R. Sommer
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classification ✦ hep-lat
keywords b-physicsfermionswilsonalphab-quarkcollaborationconfigurationscontinuum
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We report the final results of the ALPHA collaboration for some B-physics observables: $f_B$, $f_{B_s}$ and $m_b$. We employ CLS configurations with 2 flavors of $O(a)$ improved Wilson fermions in the sea and pion masses ranging down to 190 MeV. The b-quark is treated in HQET to order $1/m_b$. The renormalization, the matching and the improvement were performed non-perturbatively, and three lattice spacings reaching $a=0.048$ fm are used in the continuum extrapolation.

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