TY - JOUR
T1 - Quark loop effects in semileptonic form factors for heavy-light mesons
AU - Bernard, C
AU - DeTar, C
AU - Gottlieb, S
AU - Gregory, EB
AU - Heller, UM
AU - McNeile, C
AU - Osborn, J
AU - Sugar, RL
AU - Toussaint, D
PY - 2004/3
Y1 - 2004/3
N2 - 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.
AB - 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.
U2 - 10.1016/S0920-5632(04)90009-6
DO - 10.1016/S0920-5632(04)90009-6
M3 - Conference proceedings published in a journal
SN - 0920-5632
VL - 129-130
SP - 364
EP - 365
JO - Nuclear Physics B-Proceedings Supplements
JF - Nuclear Physics B-Proceedings Supplements
ER -