Electromagnetic Form Factors of the Baryon Decuplet

Abstract

We investigate the electromagnetic transition form factors of the baryon decuplet to the baryon octet, based on the self-consistent SU(3) chiral quark-soliton model, taking into account the effects of explicit breaking of flavor SU(3) symmetry. We emphasize the Q 2 dependence of the electromagnetic N → ∆ transition form factors and the ratios of E2/M 1 and C2/M 1 in comparison with the experimental and empirical data. In order to compare the present results of the electromagnetic transition form factors of the N → ∆ with those from lattice QCD, we evaluate the form factors with the pion mass deviated from its physical value. The results of the E2/M 1 and C2/M 1 ratios are in good agreement with the lattice data. We also present the results of the electromagnetic transition form factors for the decuplet to the octet transitions.Keywords: Electromagnetic transition form factors of the baryon decuplet, E2/M 1 ratios, pion mean fields, the chiral quark-soliton model *