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We evaluate the electromagnetic $\Xi_c \gamma \rightarrow\Xi_c^\prime$transition on 2+1 flavor lattices corresponding to a pion mass of $\sim 156$MeV. We extract the magnetic Sachs and Pauli form factors which give the$\Xi_c$-$\Xi_c^\prime$ transition magnetic moment and the decay rates of$\Xi_c^\prime$ baryons. We did not find a signal for the magnetic form factorof the neutral transition $\Xi_c^0 \gamma \rightarrow\Xi_c^{\prime 0}$, whichis suppressed by the U-spin flavor symmetry. As a byproduct, we extract themagnetic form factors and the magnetic moments of $\Xi_c$ and $\Xi_c^\prime$baryons, which give an insight to the dynamics of $u/d$, $s$ and $c$ quarkshaving masses at different scales.

$\Xi_c \gamma \rightarrow\Xi^\prime_c$ transition in lattice QCD