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.
Titolo: | A proposal for B-physics on current lattices |
Autori: | B. Blossier; Guido Martinelli |
Rivista: | |
Data di pubblicazione: | 2010 |
Volume: | 2010 |
Fascicolo: | 4 |
Pagina iniziale: | 49 |
Pagina finale: | 72 |
Digital Object Identifier (DOI): | 10.1007/jhep04(2010)049 |
URL: | http://www.scopus.com/inward/record.url?eid=2-s2.0-77954933069&partnerID=65&md5=44ec6c1285ee84386af046dc7117f2d2 |
Appare nelle tipologie: | 1.1 Journal article |
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