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

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          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.

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          Journal
          13 September 1999
          Article
          hep-lat/9909100
          1b3e13b3-10d3-4822-b9cb-f4f2635da014
          History
          Custom metadata
          Edinburgh-1999/12
          Nucl.Phys.Proc.Suppl. 83 (2000) 322-324
          3 pages, 2 figures, (LATTICE 99 - Heavy Quarks)
          hep-lat

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