$B \to D^* l ν$ with staggered chiral perturbation theory

Details $B \to D^* l ν$ with staggered chiral perturbation theory $B \to D^* l ν$ with staggered chiral perturbation theory

2005-10-09

arxiv.org/abs/hep-lat/0510058v2

PoS LAT2005 (2005) 221

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 2 figures, talk presented at Lattice 2005 in Dublin, Ireland

Scientific paper

An unquenched calculation of the form factor for $B\to D^* l \nu$ is needed to improve the determination of $|V_{cb}|$. The MILC lattices, computed with a 2+1 improved staggered action for the light quarks, are well suited to this purpose. The relevant staggered chiral perturbation theory (SChPT) must be known in order to correctly account for the "taste" breaking discretization effects associated with the staggered quarks to NLO in $1/ m_{D^*}$. This SChPT calculation is presented.

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