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

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

1999-09-13

arxiv.org/abs/hep-lat/9909100v1

Nucl.Phys.Proc.Suppl. 83 (2000) 322-324

Physics

High Energy Physics

High Energy Physics - Lattice

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

Scientific paper

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.

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