A method to extract B-physics parameters (b-quark mass and fB, fBs 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 Nf=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, 2010(4), 049 [10.1007/JHEP04(2010)049].

A proposal for B-physics on current lattices

FREZZOTTI, ROBERTO;ROSSI, GIANCARLO;
2010-01-01

Abstract

A method to extract B-physics parameters (b-quark mass and fB, fBs 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 Nf=2 maximally twisted Wilson fermions data.
2010
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/02 - FISICA TEORICA, MODELLI E METODI MATEMATICI
English
Con Impact Factor ISI
Keyword(s): INSPIRE: quark: mass | meson: mass | fermion: Wilson | fermion: twist | B/s: decay constant | numerical calculations | bottom: mass | B: decay constant Author supplied: Lattice QCD | Quark Masses and SM Parameters | B-Physics | Heavy Quark Physics
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, 2010(4), 049 [10.1007/JHEP04(2010)049].
Blossier, B; Dimopoulos, P; Frezzotti, R; Herdoiza, G; Jansen, K; Lubicz, V; Martinelli, G; Michael, C; Rossi, G; Shindler, A; Simula, S; Tarantino, C...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/80033
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