Semileptonic B Decays from an NRQCD/D234 Action

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

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Semileptonic B Decays from an NRQCD/D234 Action

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arxiv hep-lat/0208062 v1 pith:FHZE3EED submitted 2002-08-27 hep-lat

J. Shigemitsu , S. Collins , C.T.H. Davies , J. Hein , R.R. Horgan , G.P. Lepage This is my paper · ORCID

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keywords d234decayserrorsnrqcdquarkresultssemileptonicaction

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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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