Nucleon polarizabilities and Delta-resonance magnetic moment in chiral EFT

Recent chiral EFT calculations of nucleon polarizabilities reveal a problem in the current empirical determination of proton's electromagnetic polarizabilities. We also report on the progress in the empirical determination of the $Δ$(1232)-resonance magnetic moment in the process of $γp \to p π^0 γ'$ measured at MAMI.

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