Application of low energy theorems to the new particles

Discussion Compton scattering on the new states we establish the following: The spin J^P = 2⁺ state, an orbital excitation of ψ, must exist, and its coupling to the ψ(3084) is related to the coupling ψX(2800). A spin higher than 2 (probably 3) with negative charge conjugation must exist, and its couplings can be related to the ψ2⁺γ and ψ′2⁺γ couplings. This state might have a substantial radiative width to the 2⁺. These results depend on a saturation assumption of the sum rules, which has always worked well. Its failure will also be of interest.