### 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 (US) |
---|---|

Pages (from-to) | 106-113 |

Number of pages | 8 |

Journal | Nuclear Physics B (Proceedings Supplements) |

Volume | 60 |

Issue number | 1-2 |

State | Published - Jan 1998 |

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### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Cite this

*Nuclear Physics B (Proceedings Supplements)*,

*60*(1-2), 106-113.

**Heavy-light decay constants - MILC results with the Wilson action.** / Bernard, Claude; Blum, Tom; DeGrand, Thomas A.; DeTar, Carleton; Gottlieb, Steven; Heller, Urs M.; Hetrick, Jim; McNeile, Craig; Rummukainen, Kari; Soni, A.; Sugar, Bob; Toussaint, William D; Wingate, Matthew.

Research output: Contribution to journal › Article

*Nuclear Physics B (Proceedings Supplements)*, vol. 60, no. 1-2, pp. 106-113.

}

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, William D

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 - http://www.scopus.com/inward/record.url?scp=0031602617&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031602617&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0031602617

VL - 60

SP - 106

EP - 113

JO - Nuclear and Particle Physics Proceedings

JF - Nuclear and Particle Physics Proceedings

SN - 2405-6014

IS - 1-2

ER -