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f_B for Various Actions : Approaching the Continuum Limit with Dynamical Fermions

Bernard, C.; Datta, S.; DeTar, C.; Gottlieb, S.; Heller, U.M.; Hetrick, J.; McNeile, C.; Orginos, K.; Sugar, R. and Toussaint, D. (2001) f_B for Various Actions : Approaching the Continuum Limit with Dynamical Fermions. Nuclear Physics B - Proceedings Supplements, 94 (1-3). pp. 346-349. ISSN 0920-5632

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Official URL: http://www.elsevier.com/wps/find/journaldescriptio...

Abstract

We present results for pseudoscalar decay constants of heavy-light mesons using both quenched and N_f = 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.

Item Type:Article
Additional Information:LTH 490. arXiv Number: arXiv:hep-lat/0011029v1. Available online 29 April 2002. Issue: March 2001.
Uncontrolled Keywords:NONPERTURBATIVE O(A) IMPROVEMENT; LATTICE QCD; DECAY CONSTANTS; OPERATORS
Subjects:Q Science > QC Physics
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences
DOI:10.1016/S0920-5632(01)00923-9
Related URLs:
Refereed:No
Status:Published
ID Code:590
Deposited On:20 Nov 2008 12:27
Last Modified:20 May 2011 09:58

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