Determination of Vub from B->pi l nu on the lattice

UKQCD Collaboration; C. M. Maynard

Determination of Vub from B->pi l nu on the lattice

High Energy Physics - Lattice 2007-05-23 v1

Authors: UKQCD Collaboration , C. M. Maynard

Abstract

We present results of a lattice study of the form factors in the decay B-> pi l nu. We attempt to disentangle the the dependence of the form factors on the light quark masses and the momentum transfer. Using models of the q^2 dependence we calculate the total decay rate, and compare to the experimental measure to extract Vub. This study was performed in the quenched approximation at beta=6.2 on a 24^3 X 48 lattice, with a non-perturbatively improved SW fermion action.

Keywords

B->pi l nu decay form factors Vub lattice QCD quenched approximation SW fermion action

Cite

@article{arxiv.hep-lat/9909100,
  title  = {Determination of Vub from B->pi l nu on the lattice},
  author = {UKQCD Collaboration and C. M. Maynard},
  journal= {arXiv preprint arXiv:hep-lat/9909100},
  year   = {2007}
}

Comments

3 pages, 2 figures, (LATTICE 99 - Heavy Quarks)

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