Bonn-Gatchina Partial Wave Analysis: Search for High Spin Baryon States

The combined analysis of the pion-induced and photoproduction data reveals evidences for unknown nucleon resonances in the fourth resonance region. Two solutions with different pattern of high spin, positive parity states were found. Although the first solution shows a rather large mass gap between high spin baryons with positive and negative parities, the second solution supports the idea of chiral symmetry restoration at high energies. The new polarization data should provide a necessary information to distinguish these two solutions. (author)