Searching for chiral logs in the static-light decay constant



Collaboration, UKQCD, McNeile, C and Michael, C
Searching for chiral logs in the static-light decay constant. JHEP, 0501. 011 - ?.

[img] PDF
0411014v1.pdf

Download (160kB)
[img] Postscript (Requires a viewer, such as GSview)
0411014v1.ps.ps

Download (289kB)

Abstract

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
Uncontrolled Keywords: hep-lat, hep-lat
Subjects: Q Science > QC Physics
Divisions: ?? dep_math ??
Depositing User: Symplectic Admin
Date Deposited: 18 Aug 2008 13:37
Last Modified: 16 Sep 2020 07:10
DOI: 10.1088/1126-6708/2005/01/011
Publisher's Statement : Copyright © Institute of Physics and IOP Publishing Limited 2008
Related URLs:
URI: http://livrepository.liverpool.ac.uk/id/eprint/430