Multichannel parametrization of π N scattering amplitudes and extraction of resonance parameters
Abstract
We present results of a new multichannel partial-wave analysis for π N scattering in the c.m. energy range 1080 to 2100 MeV. This work explicitly includes η N and K channels and the single pion photoproduction channel. Resonance parameters were extracted by fitting partial-wave amplitudes from all considered channels using a multichannel parametrization that is consistent with S-matrix unitarity. The resonance parameters so obtained are compared to predictions of quark models.
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