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

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

2004-12-30

arxiv.org/abs/nucl-th/0412113v2

Phys.Rev.Lett. 94 (2005) 102003

Physics

Nuclear Physics

Nuclear Theory

5 pages, 3 figures; two sentences and one reference added - version accepted for publication in PRL

Scientific paper

10.1103/PhysRevLett.94.102003

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

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