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; D. Toussaint; M. Wingate

doi:10.1016/S0920-5632(97)00770-6

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, D. Toussaint, M. Wingate

Physics

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

MILC collaboration results for f_B, f_B0, f_D f_D3 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 ± 10 ^{+36 +13}_{-13 -0} MeV, and f_B0/f_B = 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 f_B by ≈20 MeV and make the error within the quenched approximation more symmetric.

Original language	English (US)
Pages (from-to)	362-364
Number of pages	3
Journal	Nuclear Physics B - Proceedings Supplements
Volume	63
Issue number	1-3
DOIs	https://doi.org/10.1016/S0920-5632(97)00770-6
State	Published - Apr 1998

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics

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@article{24224052fdcd4cd0b6827a3ab83cc1b6,

title = "Heavy-light decay constants from Wilson and static quarks",

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.",

author = "C. Bernard and T. DeGrand and C. DeTar and Steven Gottlieb and Heller, {U. M.} and J. Hetrick and C. McNeile and K. Rummukainen and R. Sugar and D. Toussaint and M. Wingate",

note = "Funding Information: work was supported in part by the DOE and NSF.",

year = "1998",

month = apr,

doi = "10.1016/S0920-5632(97)00770-6",

language = "English (US)",

volume = "63",

pages = "362--364",

journal = "Nuclear Physics B - Proceedings Supplements",

issn = "0920-5632",

publisher = "Elsevier B.V.",

number = "1-3",

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TY - JOUR

T1 - Heavy-light decay constants from Wilson and static quarks

AU - Bernard, C.

AU - DeGrand, T.

AU - DeTar, C.

AU - Gottlieb, Steven

AU - Heller, U. M.

AU - Hetrick, J.

AU - McNeile, C.

AU - Rummukainen, K.

AU - Sugar, R.

AU - Toussaint, D.

AU - Wingate, M.

N1 - Funding Information: work was supported in part by the DOE and NSF.

PY - 1998/4

Y1 - 1998/4

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0032042179&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032042179&partnerID=8YFLogxK

U2 - 10.1016/S0920-5632(97)00770-6

DO - 10.1016/S0920-5632(97)00770-6

M3 - Article

AN - SCOPUS:0032042179

SN - 0920-5632

VL - 63

SP - 362

EP - 364

JO - Nuclear Physics B - Proceedings Supplements

JF - Nuclear Physics B - Proceedings Supplements

IS - 1-3

ER -

Heavy-light decay constants from Wilson and static quarks

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