Analysis of tau -> Ks pion nu_tau Belle data in a chiral framework

Details Analysis of tau -> Ks pion nu_tau Belle data in a chiral framework Analysis of tau -> Ks pion nu_tau Belle data in a chiral framework

2008-10-03

arxiv.org/abs/0810.0639v1

Nucl.Phys.Proc.Suppl.186:179-182,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures

Scientific paper

10.1016/j.nuclphysbps.2008.12.04

The recent measurement of the tau -> Ks pion nu_tau spectrum by the Belle Collaboration provides the frame to set forth a theoretical description of the decay, which is based on the contributing vector F_+(s) and scalar F_0(s) form factors. We show that a good representation of data is obtained through the use of form factors calculated within resonance chiral theory and constrained by dispersion relations and short-distance QCD. Hence we obtain a determination of K*(892) parameters and the low-energy parameterization of F_+(s).

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