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HK: Fachverband Physik der Hadronen und Kerne

HK 32: Theorie

HK 32.5: Vortrag

Mittwoch, 14. März 2007, 15:15–15:30, C

The reformulated infrared regularization of baryon chiral perturbation theory and some applications — Dalibor Djukanovic, Thomas Fuchs, Jambul Gegelia, Stefan Scherer, and •Matthias Schindler — Institut für Kernphysik, J. Gutenberg-Universität, D-55099 Mainz

We consider a generalization of the infrared regularization of baryon chiral perturbation theory. The new formulation allows for the inclusion of additional degrees of freedom and the extension to multi-loop diagrams. As examples the nucleon form factors under the inclusion of vector and axial-vector mesons are considered, and results of a two-loop calculation of the nucleon mass at order O(q⁶) are presented.