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Magnetic moment of the Delta(1232)-resonance in chiral effective field theory

Vladimir Pascalutsa·Marc Vanderhaeghen
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Abstract

We perform a relativistic chiral effective field theory calculation of the radiative pion photoproduction ($γp \to π^0 p γ'$) in the $Δ$-resonance region, to next-to-leading order in the ``delta-expansion''. This work is aimed at a model-independent extraction of the $Δ^+$ magnetic moment from new precise measurements of this reaction. It also predicts the chiral behavior of $Δ$'s magnetic moment, which can be used to extrapolate the recent lattice QCD results to the physical point.

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Vladimir Pascalutsa, Marc Vanderhaeghen. 2005-02-11. Magnetic moment of the Delta(1232)-resonance in chiral effective field theory. https://doi.org/10.1103/physrevlett.94.102003

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