Negative-Parity NN Resonances and Extraneous States
Angular momentum excitations of six quarks in a bag give a rich resonance structure in the NN channel above P/sub lab/ approx. = 1.3 GeV/c. Some states occur with quantum numbers foreign to NN, which we refer to as extraneous states. The lowest negative-parity states are an (NN)/sup 1/P/sub 1/ resonance and two extraneous I = 0 states with J/sup P/ = 0/sup -/ and 2/sup -/, all around 2.2 GeV. The latter two states mainly decay in NN..pi... The lowest (NN)/sup 3/F/sub 3/ resonance lies at M = 2.34 GeV.