Direct calculation of the K-matrix for pion electro-production in the Delta channel

Details Direct calculation of the K-matrix for pion electro-production in the Delta channel Direct calculation of the K-matrix for pion electro-production in the Delta channel

2004-09-21

arxiv.org/abs/hep-ph/0409246v2

Eur.Phys.J. A26 (2005) 99-106

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 4 figures; accepted for publication in EPJA

Scientific paper

We present a method to calculate directly the K-matrices for the pion electro-production processes in the framework of chiral quark models which allows for a clean separation of the resonant amplitudes from the background. The method is applied to the calculation of the multipole amplitudes M_{1+}, E_{1+}, and S_{1+} in the Delta channel within the Cloudy Bag Model. A good overall description is found in a broad energy range.

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