1208.2710 (M. Shrestha et al.)

Multichannel parametrization of πN scattering amplitudes and
extraction of resonance parameters    [PDF]

M. Shrestha, D. M. Manley

We present results of a new multichannel partial-wave analysis for \pi N scattering in the c.m. energy range 1080 to 2100 MeV. This work explicitly includes \eta N and K \Lambda 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.

View original: http://arxiv.org/abs/1208.2710