Dresden 2000 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 14: Postersitzung / Theorie

HK 14.14: Poster

Donnerstag, 23. März 2000, 10:15–12:45, B 113

Chiral dynamics with coupled channels: inclusion of the η′ — •Stefan Wetzel, Steven Bass, Bugra Borasoy, Norbert Kaiser und Wolfram Weise — Technische Universität München

We extend our recent chiral SU(3) approach with coupled channels by including the axial U(1) anomaly. The η′ N channel is added with coupling strength derived from an effective Lagrangian. All the meson-baryon channels are coupled through a potential which is iterated to all orders in a seperable Lippmann-Schwinger equation. As in previous work, the few unknown parameters are adjusted to a large amount of experimental data. Recent results are presented, with special emphasis on η and η′ photoproduction.
(partially supported by DFG and BMBF)