The Delta(1232) Resonance in Chiral Effective Field Theory

Details The Delta(1232) Resonance in Chiral Effective Field Theory The Delta(1232) Resonance in Chiral Effective Field Theory

2007-12-23

arxiv.org/abs/0712.3919v1

Prog.Part.Nucl.Phys.61:27-33,2008

Physics

Nuclear Physics

Nuclear Theory

8 pages, 8 figs; prepared for the proceedings of the Intl Erice School ``Quarks in Hadrons and Nuclei'', 29th Course, 16--24 S

Scientific paper

10.1016/j.ppnp.2007.12.023

I discuss the problem of formulating the baryon chiral perturbation theory ($\chi$PT) in the presence of a light resonance, such as the $\Delta(1232)$, the lightest nucleon resonance. It is shown how to extend the power counting of $\chi$PT to correctly account for the resonant contributions. Recent applications of the resulting chiral effective-field theory to the description of pion production reactions in $\Delta$-resonance region are briefly reviewed.

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