The decay constants fB and fD+ from three-flavor lattice QCD

C. Bernard, C. DeTar, M. Di Pierro, A. X. El-Khadra, R. T. Evans, E. Freeland, E. Gamiz, Steven Gottlieb, U. M. Heller, J. E. Hetrick, R. Jain, A. S. Kronfeld, J. Laiho, L. Levkova, P. B. Mackenzie, D. Renner, J. N. Simone, R. Sugar, William D Toussaint, R. S. Van De Water

Research output: Contribution to journalConference article

6 Citations (Scopus)

Abstract

We present new preliminary results for the leptonic decay constants fB and fD+ determined in 2 + 1 flavor lattice QCD at lattice spacings a = 0.09, 0.12 and 0.15 fm. Results are obtained using the MILC Collaboration gauge configuration ensembles, clover heavy quarks in the Fermilab interpretation and improved staggered light quarks. Decay constants, computed at partially quenched combinations of the valence and sea light quark masses, are used to determine the low-energy parameters of staggered chiral perturbation theory. The physical decay constants are found in an extrapolation using the parameterized chiral formula.

Original languageEnglish (US)
Article number370
JournalProceedings of Science
Volume42
StatePublished - Jan 1 2007
Event25th International Symposium on Lattice Field Theory, LATTICE 2007 - Regensburg, Germany
Duration: Jul 30 2007Aug 4 2007

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quantum chromodynamics
quarks
decay
extrapolation
perturbation theory
spacing
valence
configurations
energy

ASJC Scopus subject areas

  • General

Cite this

Bernard, C., DeTar, C., Di Pierro, M., El-Khadra, A. X., Evans, R. T., Freeland, E., ... Van De Water, R. S. (2007). The decay constants fB and fD+ from three-flavor lattice QCD. Proceedings of Science, 42, [370].

The decay constants fB and fD+ from three-flavor lattice QCD. / Bernard, C.; DeTar, C.; Di Pierro, M.; El-Khadra, A. X.; Evans, R. T.; Freeland, E.; Gamiz, E.; Gottlieb, Steven; Heller, U. M.; Hetrick, J. E.; Jain, R.; Kronfeld, A. S.; Laiho, J.; Levkova, L.; Mackenzie, P. B.; Renner, D.; Simone, J. N.; Sugar, R.; Toussaint, William D; Van De Water, R. S.

In: Proceedings of Science, Vol. 42, 370, 01.01.2007.

Research output: Contribution to journalConference article

Bernard, C, DeTar, C, Di Pierro, M, El-Khadra, AX, Evans, RT, Freeland, E, Gamiz, E, Gottlieb, S, Heller, UM, Hetrick, JE, Jain, R, Kronfeld, AS, Laiho, J, Levkova, L, Mackenzie, PB, Renner, D, Simone, JN, Sugar, R, Toussaint, WD & Van De Water, RS 2007, 'The decay constants fB and fD+ from three-flavor lattice QCD', Proceedings of Science, vol. 42, 370.
Bernard C, DeTar C, Di Pierro M, El-Khadra AX, Evans RT, Freeland E et al. The decay constants fB and fD+ from three-flavor lattice QCD. Proceedings of Science. 2007 Jan 1;42. 370.
Bernard, C. ; DeTar, C. ; Di Pierro, M. ; El-Khadra, A. X. ; Evans, R. T. ; Freeland, E. ; Gamiz, E. ; Gottlieb, Steven ; Heller, U. M. ; Hetrick, J. E. ; Jain, R. ; Kronfeld, A. S. ; Laiho, J. ; Levkova, L. ; Mackenzie, P. B. ; Renner, D. ; Simone, J. N. ; Sugar, R. ; Toussaint, William D ; Van De Water, R. S. / The decay constants fB and fD+ from three-flavor lattice QCD. In: Proceedings of Science. 2007 ; Vol. 42.
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abstract = "We present new preliminary results for the leptonic decay constants fB and fD+ determined in 2 + 1 flavor lattice QCD at lattice spacings a = 0.09, 0.12 and 0.15 fm. Results are obtained using the MILC Collaboration gauge configuration ensembles, clover heavy quarks in the Fermilab interpretation and improved staggered light quarks. Decay constants, computed at partially quenched combinations of the valence and sea light quark masses, are used to determine the low-energy parameters of staggered chiral perturbation theory. The physical decay constants are found in an extrapolation using the parameterized chiral formula.",
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AU - DeTar, C.

AU - Di Pierro, M.

AU - El-Khadra, A. X.

AU - Evans, R. T.

AU - Freeland, E.

AU - Gamiz, E.

AU - Gottlieb, Steven

AU - Heller, U. M.

AU - Hetrick, J. E.

AU - Jain, R.

AU - Kronfeld, A. S.

AU - Laiho, J.

AU - Levkova, L.

AU - Mackenzie, P. B.

AU - Renner, D.

AU - Simone, J. N.

AU - Sugar, R.

AU - Toussaint, William D

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N2 - We present new preliminary results for the leptonic decay constants fB and fD+ determined in 2 + 1 flavor lattice QCD at lattice spacings a = 0.09, 0.12 and 0.15 fm. Results are obtained using the MILC Collaboration gauge configuration ensembles, clover heavy quarks in the Fermilab interpretation and improved staggered light quarks. Decay constants, computed at partially quenched combinations of the valence and sea light quark masses, are used to determine the low-energy parameters of staggered chiral perturbation theory. The physical decay constants are found in an extrapolation using the parameterized chiral formula.

AB - We present new preliminary results for the leptonic decay constants fB and fD+ determined in 2 + 1 flavor lattice QCD at lattice spacings a = 0.09, 0.12 and 0.15 fm. Results are obtained using the MILC Collaboration gauge configuration ensembles, clover heavy quarks in the Fermilab interpretation and improved staggered light quarks. Decay constants, computed at partially quenched combinations of the valence and sea light quark masses, are used to determine the low-energy parameters of staggered chiral perturbation theory. The physical decay constants are found in an extrapolation using the parameterized chiral formula.

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