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Searching for chiral logs in the static-light decay constant

McNeile, C. and Michael, C. (2005) Searching for chiral logs in the static-light decay constant. Journal of High Energy Physics (01). Article Number: 011. ISSN 1029-8479

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Using the clover fermion action in unquenched QCD with pion masses as low as 420 MeV, we look for evidence for chiral logs in the static-light decay constant. There is some evidence for a chiral log term, if the original static theory of Eichten and Hill is used. However, the more precise data from the static action of the ALPHA collaboration do not show any evidence for non-linear dependence of the static-light decay constant on the light quark mass. We make some comments on the connection between chiral perturbation theory for decay constants of the pion and static-light meson.

Item Type:Article
Additional Information:LTH 641; arXiv Number: arXiv:hep-lat/0411014v1. 11 pages. Published 24 January 2005. Issue: January 2005.
Uncontrolled Keywords:Lattice Gauge Field Theories; B-Physics; PERTURBATION-THEORY; LATTICE QCD; B-MESONS; RENORMALIZATION; QUARK; MASS
Subjects:Q Science > QC Physics
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences
Publisher's Statement:Copyright © Institute of Physics and IOP Publishing Limited 2008
Related URLs:
ID Code:430
Deposited On:18 Aug 2008 14:37
Last Modified:20 May 2011 14:17

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