Heavy-Light Decay Constants from Wilson and Static Quarks

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dc.creatorBernard, C.
dc.creatorDeGrand, T.
dc.creatorDeTar, C.
dc.creatorGottlieb, Steven
dc.creatorHeller, U. M.
dc.creatorHetrick, J.
dc.creatorMcNeile, C.
dc.creatorRummukainen, K.
dc.creatorSugar, R.
dc.creatorToussaint, D.
dc.creatorWingate, M.
dc.date1997-09-29
dc.date.accessioned2026-07-07T11:34:48Z
dc.date.available2026-07-07T11:34:48Z
dc.descriptionMILC collaboration results for \fB, \fBs, \fD, \fDs and their ratios are presented. These results are still preliminary, but the analysis is close to being completed. Sources of systematic error, both within the quenched approximation and from quenching itself, are estimated. We find, for example, $f_B=153\pm 10 {}^{+36}_{-13} {}^{+13}_{-0} MeV$, and $f_{B_s}/f_B = 1.10 \pm 0.02 {}^{+0.05}_{-0.03} {}^{+0.03}_{-0.02}$, where the errors are statistical, systematic (within the quenched approximation), and systematic (of quenching), respectively. The extrapolation to the continuum and the chiral extrapolation are the largest sources of error. Present central values are based on linear chiral extrapolations; a shift to quadratic extrapolations would raise $f_B$ by $\approx20$ MeV and make the error within the quenched approximation more symmetric.
dc.description3 pages, LaTeX with espcrc2.sty and epsf.tex, 1 included postscript figure. Poster presented by C. Bernard at LATTICE '97, Edinburgh, 22-26 July 1997
dc.identifierhttps://arxiv.org/abs/hep-lat/9709142
dc.identifierhttp://arxiv.org/abs/hep-lat/9709142
dc.identifierNucl.Phys.Proc.Suppl.63:362-364,1998
dc.identifierdoi:10.1016/S0920-5632(97)00770-6
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/198383
dc.subjectHigh Energy Physics - Lattice
dc.titleHeavy-Light Decay Constants from Wilson and Static Quarks
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