2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49401Information on the intrinsic deformation of the proton can be obtained by studying the electromagnetic p-->Delta+ quadrupole transition. Recent experiments have shown that the electric quadrupole (E2) strength in gamma p --> Delta+ is about 10 times larger than predicted by the simple quark model using only one-body currents. Our analysis provides evidence for the dominance of exchange currents in the N-->Delta quadrupole transition and identifies the physical mechanism leading to the observed E2 strength.12 pages, published in the Proceedings of the 8th International Conference on the Structure of Baryons, Bonn, Germany, Sept. 22-26, 1998, Baryons' 98, eds. D. W. Menze and B. Ch. Metsch, World Scientific, Singapore, 1999, pg. 731High Energy Physics - PhenomenologyNuclear Theorytext