Including the (1232) resonance in baryon chiral perturbation theory
Abstract
Baryon chiral perturbation theory with explicit (1232) degrees of freedom is considered. Using the extended on-mass-shell renormalization scheme, a manifestly Lorentz-invariant effective field theory with a systematic power counting is obtained. As applications we discuss the mass of the nucleon, the pion-nucleon sigma term, and the pole of the propagator.
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