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The electromagnetic form factors of octet baryons are investigated with thenonlocal chiral effective theory. The nonlocal interaction generates both theregulator which makes the loop integral convergent and the $Q^2$ dependence ofform factors at tree level. Both octet and decuplet intermediate states areincluded in the one loop calculation. The momentum dependence of baryon formfactors are studied up to 1 GeV$^2$ with the same number of parameters as forthe nucleon form factors. The obtained magnetic moments of all the baryonoctets as well as the radii are in good agreement with the experimental dataand/or lattice simulation.

Electromagnetic form factors of octet baryons with the nonlocal chiral effective theory