The Isgur-Wise Function from the Lattice

Laurent Lellouch; UKQCD Collaboration

The Isgur-Wise Function from the Lattice

High Energy Physics - Phenomenology 2008-02-03 v2 High Energy Physics - Lattice

Authors: Laurent Lellouch , UKQCD Collaboration

Abstract

We calculate the Isgur-Wise function by measuring the elastic scattering amplitude of a $D$ meson in the quenched approximation on a $24^3\times48$ lattice at $\beta=6.2$ , using an $O(a)$ -improved fermion action. We use this result, in conjunction with heavy-quark symmetry, to extract $|V_{cb}|$ from the experimentally measured $\bar B\to D^*l\bar\nu\,$ \ differential decay width.

Cite

@article{arxiv.hep-ph/9312241,
  title  = {The Isgur-Wise Function from the Lattice},
  author = {Laurent Lellouch and UKQCD Collaboration},
  journal= {arXiv preprint arXiv:hep-ph/9312241},
  year   = {2008}
}

Comments

3 pages, uuencoded compressed postscript file, to appear in the Proceedings of the International Europhysics Conference on High Energy Physics, Marseille, July 22-28, 1993. Southampton Preprint 93/94-06

The Isgur-Wise Function from the Lattice

Abstract

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