We calculate the electromagnetic polarizabilities of the spin-$\frac{ 1}{ 2}$ singly heavy baryons in the heavy baryon chiral perturbation theory up to $\mathcal{ O}(p^3)$. We estimate the low-energy constants using the magnetic moments of singly charmed baryons from lattice QCD simulations and the experimental decay widths of $\Sigma_c$ and $\Sigma_c^*$. Our results indicate that the long-range chiral corrections make significant contributions to the polarizabilities. Additionally, the magnetic dipole transitions $\mathcal{ B}_6^* \to \mathcal{ B}_6 +\gamma $ also provide large contribution to the magnetic polarizabilities.
Categories: hep-ph hep-ex hep-lat