Electromagnetic radiative decays for the singly charmed baryons with spin 3/2

초록

We present the electromagnetic radiative transitions of the singly charmed baryons with spin 3/2 from a pion mean-field approach, taking into account the rotational 1/Nc corrections and the effects of flavor SU(3) symmetry breaking. We scrutinize the valence- and sea-quark contributions to the electromagnetic transition form factors. We find that the quadrupole form factors of the sea-quark contributions dominate over those of the valence-quark ones in the smaller region of the momentum transfer. On the other hand, the sea quarks only provide marginal contributions to the magnetic dipole transition form factors of the baryon sextet with spin 3/2. The effects of the flavor SU(3) symmetry breaking are tiny except for the forbidden transition by U-spin symmetry. We also present the results for the widths of the radiative decays for the baryon sextet with spin 3/2.