Dynamical Effects in Overlapping Resonances

The dynamical effects of two overlapping resonances are examined. The experimentally observable positions and widths $s_i$, ${\Gamma }_i$ are related to the isolated quantities ${\overline{s}}_i$, ${\overline{\Gamma }}_i$ which would occur if the resonances were widely separated. Dramatic enhancements or depressions of $\frac{{\Gamma }_i}{{\overline{\Gamma }}_i}$ are demonstrated. The model is applied to the double-peaked $A_2$ with the results that one of the resonances is quite narrow: $\overline{\Gamma }\lesssim 5$ MeV. Conjectures on exotic resonances are made.