Abstract
We evaluate the electromagnetic Ξcγ→Ξc′ transition on 2+1 flavor lattices corresponding to a pion mass of ∼156 MeV. We extract the magnetic Sachs and Pauli form factors which give the Ξc–Ξc′ transition magnetic moment and the decay widths of Ξc′ baryons. We did not find a signal for the magnetic form factor of the neutral transition Ξc0γ→Ξc′0, which is suppressed by the U-spin flavor symmetry. As a byproduct, we extract the magnetic form factors and the magnetic moments of Ξc and Ξc′ baryons, which give an insight to the dynamics of u/d, s and c quarks having masses at different scales.
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