Heavy-light decay constants - MILC results with the Wilson action

Claude Bernard; Tom Blum; Thomas A. DeGrand; Carleton DeTar; Steven Gottlieb; Urs M. Heller; Jim Hetrick; Craig McNeile; Kari Rummukainen; A. Soni; Bob Sugar; Doug Toussaint; Matthew Wingate

doi:10.1016/S0920-5632(97)00472-6

Heavy-light decay constants - MILC results with the Wilson action

Claude Bernard^*
, Tom Blum
, Thomas A. DeGrand
, Carleton DeTar
, Steven Gottlieb
, Urs M. Heller
, Jim Hetrick
, Craig McNeile
, Kari Rummukainen
, A. Soni
, Bob Sugar
, Doug Toussaint
, Matthew Wingate

^*Corresponding author for this work

School of Engineering, Computing and Mathematics

Washington University St. Louis
Brookhaven National Laboratory
University of Colorado Boulder
University of Utah
Indiana University Bloomington
Florida State University
Physics Department
Bielefeld University
University of California at Santa Barbara
University of Arizona

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

Abstract

We present the current status of our ongoing calculations of pseudoscalar meson decay constants for mesons that contain one light and one heavy quark (f_B, f_Bs, f_D, f_Ds). We are currently generating new gauge configurations that include dynamical quarks and calculating the decay constants. In addition, we have several new results for the static approximation. Those results, as well as several refinements to the analysis, are new since Lattice '96. Our current (still preliminary) value for f_B is 156 ± 11 ± 30 ± 14 MeV, where the first error is from statistical and fitting errors, the second error is an estimate of other systematic errors within the quenched approximation and the third error is an estimate of the quenching error. For the ratio f_Bs/f_B, we get 1.11 ± 0.02 ± 0.03 ± 0.07.

Original language	English
Pages (from-to)	106-113
Number of pages	8
Journal	Nuclear Physics B - Proceedings Supplements
Volume	60
Issue number	1-2
DOIs	https://doi.org/10.1016/S0920-5632(97)00472-6
Publication status	Published - Jan 1998

ASJC Scopus subject areas

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

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10.1016/S0920-5632(97)00472-6

Cite this

@article{eab8095625d44123b62ea5c4626e518b,

title = "Heavy-light decay constants - MILC results with the Wilson action",

abstract = "We present the current status of our ongoing calculations of pseudoscalar meson decay constants for mesons that contain one light and one heavy quark (fB, fBs, fD, fDs). We are currently generating new gauge configurations that include dynamical quarks and calculating the decay constants. In addition, we have several new results for the static approximation. Those results, as well as several refinements to the analysis, are new since Lattice '96. Our current (still preliminary) value for fB is 156 ± 11 ± 30 ± 14 MeV, where the first error is from statistical and fitting errors, the second error is an estimate of other systematic errors within the quenched approximation and the third error is an estimate of the quenching error. For the ratio fBs/fB, we get 1.11 ± 0.02 ± 0.03 ± 0.07.",

author = "Claude Bernard and Tom Blum and DeGrand, \{Thomas A.\} and Carleton DeTar and Steven Gottlieb and Heller, \{Urs M.\} and Jim Hetrick and Craig McNeile and Kari Rummukainen and A. Soni and Bob Sugar and Doug Toussaint and Matthew Wingate",

year = "1998",

month = jan,

doi = "10.1016/S0920-5632(97)00472-6",

language = "English",

volume = "60",

pages = "106--113",

journal = "Nuclear Physics B - Proceedings Supplements",

issn = "0920-5632",

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number = "1-2",

}

TY - JOUR

T1 - Heavy-light decay constants - MILC results with the Wilson action

AU - Bernard, Claude

AU - Blum, Tom

AU - DeGrand, Thomas A.

AU - DeTar, Carleton

AU - Gottlieb, Steven

AU - Heller, Urs M.

AU - Hetrick, Jim

AU - McNeile, Craig

AU - Rummukainen, Kari

AU - Soni, A.

AU - Sugar, Bob

AU - Toussaint, Doug

AU - Wingate, Matthew

PY - 1998/1

Y1 - 1998/1

N2 - We present the current status of our ongoing calculations of pseudoscalar meson decay constants for mesons that contain one light and one heavy quark (fB, fBs, fD, fDs). We are currently generating new gauge configurations that include dynamical quarks and calculating the decay constants. In addition, we have several new results for the static approximation. Those results, as well as several refinements to the analysis, are new since Lattice '96. Our current (still preliminary) value for fB is 156 ± 11 ± 30 ± 14 MeV, where the first error is from statistical and fitting errors, the second error is an estimate of other systematic errors within the quenched approximation and the third error is an estimate of the quenching error. For the ratio fBs/fB, we get 1.11 ± 0.02 ± 0.03 ± 0.07.

AB - We present the current status of our ongoing calculations of pseudoscalar meson decay constants for mesons that contain one light and one heavy quark (fB, fBs, fD, fDs). We are currently generating new gauge configurations that include dynamical quarks and calculating the decay constants. In addition, we have several new results for the static approximation. Those results, as well as several refinements to the analysis, are new since Lattice '96. Our current (still preliminary) value for fB is 156 ± 11 ± 30 ± 14 MeV, where the first error is from statistical and fitting errors, the second error is an estimate of other systematic errors within the quenched approximation and the third error is an estimate of the quenching error. For the ratio fBs/fB, we get 1.11 ± 0.02 ± 0.03 ± 0.07.

UR - https://www.scopus.com/pages/publications/0031602617

U2 - 10.1016/S0920-5632(97)00472-6

DO - 10.1016/S0920-5632(97)00472-6

M3 - Article

AN - SCOPUS:0031602617

SN - 0920-5632

VL - 60

SP - 106

EP - 113

JO - Nuclear Physics B - Proceedings Supplements

JF - Nuclear Physics B - Proceedings Supplements

IS - 1-2

ER -

Heavy-light decay constants - MILC results with the Wilson action

Abstract

ASJC Scopus subject areas

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