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Quark loop effects in semileptonic form factors for heavy-light mesons

Bernard, C.; DeTar, C.; Gottlieb, Steven; Gregory, E.B.; Heller, U.M.; McNeile, C.; Osborn, J.; Sugar, R.L. and Toussaint, D. (2004) Quark loop effects in semileptonic form factors for heavy-light mesons. Nuclear Physics B - Proceedings Supplements, 129-130 . pp. 364-365. ISSN 0920-5632

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

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:LTH 597. arXiv Number; arXiv:hep-lat/0309055v1. Available online 29 April 2004. Issue: March 2004.
Uncontrolled Keywords:TALK TSUKUBA 2003/07/15; FERMION LATTICE FIELD THEORY; GAUGE FIELD THEORY SU(3); FLAVOR 3; PSEUDOSCALAR MESON SEMILEPTONIC DECAY; DECAY FORM FACTOR; NUMERICAL CALCULATIONS MONTE CARLO
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(04)90009-6
Related URLs:
Refereed:No
Status:Published
ID Code:506
Deposited On:20 Nov 2008 11:02
Last Modified:16 May 2012 12:27

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