Bernard, C.; Gottlieb, Steven, Gregory, E. B.; Heller, U. M.; McNeile, C.; Osborn, J.; Sugar, R. L.; Toussaint, D.
citation_title
Quark loop effects in semileptonic form factors for heavy-light mesons
citation_date
2004-03
Description
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.
Type
text;
citation_publisher
Elsevier
citation_journal_title
Nuclear Physics B - Proceedings Supplements
citation_volume
129-130
citation_firstpage
364
Citation_lastpage
365
citation_doi
10.1016/S0920-5632(04)90009-6
citatation_issn
9205632
citation_keywords
Semileptonic decay; Form factors; Quark loops; Wilson quarks
Bernard, C., DeTar, C., Gottlieb, S., Gregory, E. B., Heller, U. M., McNeile, C., Osborn, J., Sugar, R. L., & Toussaint, D. (2004). Quark loop effects in semileptonic form factors for heavy-light mesons. Nuclear Physics B, 129-130, 1-3.
