Pion-nucleon scattering around the delta resonance
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✦ hep-ph
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pion-nucleonscatteringaroundchiralcontinuouslydeltadelta-isobardescribe
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We develop a generalized version of heavy-baryon chiral perturbation theory to describe pion-nucleon scattering in a kinematic domain that extends continuously from threshold to the delta-isobar peak. The $P$-wave phase shifts are used to illustrate this framework.
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