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.

Blossier, B., Dimopoulos, P., Frezzotti, R., Herdoiza, G., Jansen, K., Lubicz, V., et al. (2010). A proposal for B-physics on current lattices. JOURNAL OF HIGH ENERGY PHYSICS, 04(4), 049 [10.1007/JHEP04(2010)049].

A proposal for B-physics on current lattices

LUBICZ, Vittorio;TARANTINO, CECILIA;
2010-01-01

Abstract

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.
2010
Blossier, B., Dimopoulos, P., Frezzotti, R., Herdoiza, G., Jansen, K., Lubicz, V., et al. (2010). A proposal for B-physics on current lattices. JOURNAL OF HIGH ENERGY PHYSICS, 04(4), 049 [10.1007/JHEP04(2010)049].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/120765
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