FB for various actions: Approaching the continuum limit with dynamical fermions

C. Bernard, S. Datta, C. DeTar, S. Gottlieb, U. M. Heller, J. Hetrick, C. McNeile, K. Orginos, R. Sugar, D. Toussaint

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Abstract

We present results for pseudoscalar decay constants of heavy-light mesons using both quenched and Nf = 2 dynamical fermion configurations. A variety of fermion actions is investigated: Wilson, nonperturbative clover, and fat-link clover. For heavy quarks the Fermilab formalism is applied. In the quenched approximation, results with the nonperturbatively improved clover action of the Alpha collaboration allow us to study the systematic error of the continuum extrapolation from the Wilson action. In addition, we use quenched configurations to explore the effects of fattening. The lessons from the quenched analyses are then applied to data with dynamical fermions, where both Wilson and fat-link clover actions have been used. This allows us to attempt a continuum extrapolation of the dynamical results.

Original languageEnglish (US)
Pages (from-to)346-349
Number of pages4
JournalNuclear Physics B - Proceedings Supplements
Volume94
Issue number1-3
DOIs
StatePublished - Mar 1 2001

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ASJC Scopus subject areas

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

Cite this

Bernard, C., Datta, S., DeTar, C., Gottlieb, S., Heller, U. M., Hetrick, J., McNeile, C., Orginos, K., Sugar, R., & Toussaint, D. (2001). FB for various actions: Approaching the continuum limit with dynamical fermions. Nuclear Physics B - Proceedings Supplements, 94(1-3), 346-349. https://doi.org/10.1016/S0920-5632(01)00923-9