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Bochum 2009 – wissenschaftliches Programm

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HK: Fachverband Hadronen und Kerne

HK 47: Hadron Structure and Spectroscopy II

HK 47.1: Vortrag

Mittwoch, 18. März 2009, 14:00–14:15, H-ZO 30

Infrared regularization for vector mesons and baryons — •Peter C. Bruns1,2 and Ulf-G. Meissner1,2,31Helmholtz-Institut für Strahlen-und Kernphysik (Theorie), Universität Bonn, Nußallee 14-16, 53115 Bonn, Germany — 2Bethe Center for Theoretical Physics, Universität Bonn, 53115 Bonn, Germany — 3Institut für Kernphysik (Theorie) and Jülich Center for Hadron Physics, Forschungszentrum Jülich, 52425 Jülich, Germany

We show that the method of infrared regularization, invented in its original form by Becher and Leutwyler, can be extended to the case of explicitly included meson resonances. After a short review of the original formalism, the steps necessary for the generalization of the method will be discussed in detail. As an application, we will evaluate a contribution to the axial form factor of the nucleon employing the generalized infrared regularization scheme.

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