arXiv:hep-lat/0208062·v1·High Energy Physics — Lattice
Semileptonic B Decays from an NRQCD/D234 Action
J. Shigemitsu🇺🇸 · S. Collins🇬🇧 · C.T.H. Davies🇬🇧 · J. Hein🇬🇧 · R.R. Horgan🇬🇧 · G.P. Lepage🇺🇸
Abstract
Semileptonic B decays are studied on quenched anisotropic lattices using Symanzik improved glue, NRQCD heavy quark and D234 light quark actions. We employ constrained fits to extract ground state contributions to two- and three-point correlators. Results for the B --> pi, l nubar decay form factors are compared with previous lattice results. We find that our systematic errors (excluding quenching errors) are dominated by chiral extrapolation uncertainties.
Comments: Lattice2002(Heavy quark physics)