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Semileptonic B Decays from an NRQCD/D234 Action

J. Shigemitsu·S. Collins·C. T. H. Davies·J. Hein·R. R. Horgan·G. P. Lepage
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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.

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J. Shigemitsu, S. Collins, C. T. H. Davies, J. Hein, R. R. Horgan, G. P. Lepage. 2002-08-27. Semileptonic B Decays from an NRQCD/D234 Action. https://doi.org/10.1016/s0920-5632(03)80457-7

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