Heavy-light decay constants from Wilson and static quarks

C. Bernard, T. DeGrand, C. DeTar, Steven Gottlieb, U. M. Heller, J. Hetrick, C. McNeile, K. Rummukainen, R. Sugar, William D Toussaint, M. Wingate

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

MILC collaboration results for fB, fB0, fD fD3 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, fB = 153 ± 10 +36 +13-13 -0 MeV, and fB0/fB = 1.10 ± 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 fB by ≈20 MeV and make the error within the quenched approximation more symmetric.

Original languageEnglish (US)
Pages (from-to)362-364
Number of pages3
JournalNuclear Physics B (Proceedings Supplements)
Volume63
Issue number1-3
StatePublished - Apr 1998

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extrapolation
quarks
decay
approximation
quenching
systematic errors
continuums
shift

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Bernard, C., DeGrand, T., DeTar, C., Gottlieb, S., Heller, U. M., Hetrick, J., ... Wingate, M. (1998). Heavy-light decay constants from Wilson and static quarks. Nuclear Physics B (Proceedings Supplements), 63(1-3), 362-364.

Heavy-light decay constants from Wilson and static quarks. / Bernard, C.; DeGrand, T.; DeTar, C.; Gottlieb, Steven; Heller, U. M.; Hetrick, J.; McNeile, C.; Rummukainen, K.; Sugar, R.; Toussaint, William D; Wingate, M.

In: Nuclear Physics B (Proceedings Supplements), Vol. 63, No. 1-3, 04.1998, p. 362-364.

Research output: Contribution to journalArticle

Bernard, C, DeGrand, T, DeTar, C, Gottlieb, S, Heller, UM, Hetrick, J, McNeile, C, Rummukainen, K, Sugar, R, Toussaint, WD & Wingate, M 1998, 'Heavy-light decay constants from Wilson and static quarks', Nuclear Physics B (Proceedings Supplements), vol. 63, no. 1-3, pp. 362-364.
Bernard C, DeGrand T, DeTar C, Gottlieb S, Heller UM, Hetrick J et al. Heavy-light decay constants from Wilson and static quarks. Nuclear Physics B (Proceedings Supplements). 1998 Apr;63(1-3):362-364.
Bernard, C. ; DeGrand, T. ; DeTar, C. ; Gottlieb, Steven ; Heller, U. M. ; Hetrick, J. ; McNeile, C. ; Rummukainen, K. ; Sugar, R. ; Toussaint, William D ; Wingate, M. / Heavy-light decay constants from Wilson and static quarks. In: Nuclear Physics B (Proceedings Supplements). 1998 ; Vol. 63, No. 1-3. pp. 362-364.
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AU - Hetrick, J.

AU - McNeile, C.

AU - Rummukainen, K.

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AU - Toussaint, William D

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