B Semileptonic Decays at High Recoil Momentum

C. T. H. Davies; E. Follana; G. P. Lepage; J. Shigemitsu; K. Y. Wong

B Semileptonic Decays at High Recoil Momentum

High Energy Physics - Lattice 2008-11-26 v1

Authors: C. T. H. Davies , E. Follana , G. P. Lepage , J. Shigemitsu , K. Y. Wong

Abstract

We explore the possibility of studying $B\to\pi l\nu$ semileptonic decays at large recoil momentum. Our methods include the use of a random-wall source for the pion to reduce statistical errors, and different smearing functions are used for the B meson to improve the overlap with the ground state. We observe, in general, a factor of 3-4 improvement in the signal-to-noise ratio in correlation functions if random-wall propagators are used.

Keywords

semileptonic decays B meson high recoil momentum lattice QCD random-wall source smearing functions signal-to-noise ratio

Cite

@article{arxiv.0710.0741,
  title  = {B Semileptonic Decays at High Recoil Momentum},
  author = {C. T. H. Davies and E. Follana and G. P. Lepage and J. Shigemitsu and K. Y. Wong},
  journal= {arXiv preprint arXiv:0710.0741},
  year   = {2008}
}

Comments

7 pages, poster presented at the XXV International Symposium on Lattice Field Theory, 30 July - 4 August 2007, Regensburg, Germany

B Semileptonic Decays at High Recoil Momentum

Abstract

Keywords

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