Electromagnetic transitions of the singly charmed baryons with spin <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>3</mml:mn><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:math>

We investigate the electromagnetic transitions of the singly charmed baryons with spin $3/2$, based on a pion mean-field approach, also known as the chiral quark-soliton model, taking into account the rotational $1/{N}_{c}$ corrections and the effects of flavor SU(3) symmetry breaking. We examine the valence- and sea-quark contributions to the electromagnetic transition form factors and find that the quadrupole form factors of the sea-quark contributions dominate over those of the valence-quark ones in the smaller ${Q}^{2}$ region, whereas 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 in general very small except for the forbidden transition ${\mathrm{\ensuremath{\Xi}}}_{c}^{0}\ensuremath{\gamma}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Xi}}}_{c}^{*0}$ by $U$-spin symmetry. We also discuss the widths of the radiative decays for the baryon sextet with spin $3/2$, comparing the present results with those from other works.

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