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

C. Bernard, C. DeTar, Steven Gottlieb, E. B. Gregory, U. M. Heller, C. McNeile, J. Osborn, R. L. Sugar, D. Toussaint

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


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 q2.

Original languageEnglish (US)
Pages (from-to)364-365
Number of pages2
JournalNuclear Physics B - Proceedings Supplements
StatePublished - Mar 2004

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics


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