Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
; Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England
; Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford OX1 3NP, England
We identify a "Lambda selection rule" for N-* resonances in the presence of QCD mixing effects. We quantify these mixing effects from existing data and predict amplitudes for exciting 20 representations in SU(6), which are forbidden in strict diquark models. By classifying Particle-Data-Group (PDG) states at N=2, we show that gamma N -> K Lambda, K-*Lambda, K Sigma, K-*Sigma, and J/psi ->(p) over barN(*) are ideal probes of baryon dynamics and for establishing whether strongly correlated diquarks survive for L > 0.