$π-N$ from an Extended Effective Field Theory

Details $π-N$ from an Extended Effective Field Theory $π-N$ from an Extended Effective Field Theory

2000-08-30

arxiv.org/abs/nucl-th/0008063v1

Physics

Nuclear Physics

Nuclear Theory

2 pages latex, working group talk, Chiral Dynamics 2000, Jefferson Lab., VA, July 2000, World Scientific, to be pub

Scientific paper

Third order chiral perturbation theory accounts for the $\pi-N$ scattering
phase shift data out to energies slightly below the position of the $\Delta$
resonance. The low energy constants are not accurately determined. Explicit
inclusion of the $\Delta$ field is favored.

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