Vector Meson Dominance as the first order of a sequence of Pade Approximants

Details Vector Meson Dominance as the first order of a sequence of Pade Approximants Vector Meson Dominance as the first order of a sequence of Pade Approximants

2008-09-10

arxiv.org/abs/0809.1863v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 figures, espcrc2 style. To appear in the proceedings of the 14th International QCD Conference, QCD 08, 7-12 July 20

Scientific paper

10.1016/j.nuclphysbps.2008.12.03

The use of Pade Approximants for the analysis of the pion vector form-factor is discussed and justified in this talk. The method is tested first in a theoretical model and applied then on real experimental data. It is shown how the Pade Approximants provide a convenient and reliable framework to incorporate both low and high energy information in the euclidean region, leading to improved determinations of the low energy parameters such as, e.g., the quadratic radius ^pi_V.

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