Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 4, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP04(2010)049
Keywords
Lattice QCD; Quark Masses and SM Parameters; B-Physics; Heavy Quark Physics
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Funding
- STFC [ST/G00062X/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/G00062X/1] Funding Source: researchfish
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A method to extract B-physics parameters (b-quark mass and f(B), f(Bs) decay constants) from currently available lattice data is presented and tested. The approach is based on the idea of constructing appropriate ratios of heavy-light meson masses and decay constants, respectively, possessing a precisely known static limit, and evaluating them at various pairs of heavy quark masses around the charm. Via a smooth interpolation in the heavy quark mass from the easily accessible charm region to the asymptotic point, B-physics parameters are computed with a few percent (statistical + systematic) error using recently produced N-f - 2 maximally twisted Wilson fermions data.
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