Semileptonic B Decays from an NRQCD/D234 Action

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

doi:10.1016/S0920-5632(03)80457-7

Semileptonic B Decays from an NRQCD/D234 Action

High Energy Physics - Lattice 2009-11-07 v1

Authors: 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.

Keywords

semileptonic B decays NRQCD D234 action anisotropic lattice form factors chiral extrapolation

Cite

@article{arxiv.hep-lat/0208062,
  title  = {Semileptonic B Decays from an NRQCD/D234 Action},
  author = {J. Shigemitsu and S. Collins and C. T. H. Davies and J. Hein and R. R. Horgan and G. P. Lepage},
  journal= {arXiv preprint arXiv:hep-lat/0208062},
  year   = {2009}
}

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Lattice2002(Heavy quark physics)

Semileptonic B Decays from an NRQCD/D234 Action

Abstract

Keywords

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