Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 9, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP09(2012)132
Keywords
Lattice QCD; B-Physics; Nonperturbative Effects; Heavy Quark Physics
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Funding
- Deutsche Forschungsgemeinschaft (DFG) [SFB/TR 09]
- European community through EU [MRTN-CT-2006-035482]
- STFC [ST/G000522/1]
- EU [238353]
- DFG [HE 4517/2-1]
- MIUR (Italy) [PRIN09]
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We report on a non-perturbative determination of the parameters of the lattice Heavy Quark Effective Theory (HQET) Lagrangian and of the time component of the heavy-light axial-vector current with N-f = 2 flavors of massless dynamical quarks. The effective theory is considered at the 1/m(h) order, and the heavy mass m(h) covers a range from slightly above the charm to beyond the beauty region. These HQET parameters are needed to compute, for example, the b-quark mass, the heavy-light spectrum and decay constants in the static approximation and to order 1/m(h) in HQET. The determination of the parameters is done non-perturbatively. The computation reported in this paper uses the plaquette gauge action and two different static actions for the heavy quark described by HQET. For the light-quark action we choose non-perturbatively O(a)-improved Wilson fermions.
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