Study of the Electromagnetic Structure ofΔ(1236)via Photo- and Electrodisintegration of the Deuteron

The deuteron photo- and electrodisintegration processes $\gamma d\to \Delta \Delta$ and $\mathrm{ed}\to e\Delta \Delta$ are shown to be probes of the electromagnetic properties of $\Delta \mathrm{}\left(1236\right)\mathrm{}$, on the basis of a $\Delta$-exchange-reaction mechanism. The presence of the $\Delta \Delta$ configuration in the deuteron, with an estimated probability of 1%, yields a photon cross section of the order of 1 μb at 1-2 GeV photon energy.