Quark Loop Effects in Semileptonic Form Factors for Heavy-Light Mesons

Bernard, C, DeTar, C, Gottlieb, Steven, Gregory, E, Heller, Urs, McNeile, C, Osborn, J, Sugar, R and Toussaint, D (2003) Quark Loop Effects in Semileptonic Form Factors for Heavy-Light Mesons. Nucl.Phys.Proc.Suppl., 129. pp. 364-365.

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Abstract

We present preliminary results of a determination of the semileptonic form factor for the decay of pseudoscalar heavy-light mesons to pseudoscalar light-light mesons in full QCD. In this preliminary study we focus on the effects of dynamical quark loops. Accordingly, we compare results of simulations with matched quenched and Asqtad dynamical gauge configurations. The latter include three flavors of light quarks. Our simulation uses clover Wilson valence quarks, treated in the Fermilab formalism. Preliminary results, as yet uncorrected by continuum matching factors, suggest a measurable enhancement in the form factor due to dynamical quark loops over the accessible range of $q^2$.

Item Type:	Article
Additional Information:	Lattice2003(heavy)
Uncontrolled Keywords:	hep-lat, hep-lat
Subjects:	?? QC ??
Divisions:	Faculty of Science and Engineering > School of Physical Sciences > Mathematical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	20 Nov 2008 11:02
Last Modified:	17 Dec 2022 01:41
DOI:	10.1016/s0920-5632(04)90009-6
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/506