Multichannel parametrization of $\overline{K}N$ scattering amplitudes and extraction of resonance parameters

Multichannel parametrization of $\bar{K} N$ scattering amplitudes and extraction of resonance parameters

H. Zhang, J. Tulpan, M. Shrestha, and D. M. Manley

Phys. Rev. C 88, 035205 – Published 13 September 2013

Abstract

We present results of a new multichannel partial-wave analysis for $\bar{K} N$ scattering in the center-of-mass (c.m.) energy range from 1480 to 2100 MeV. 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 are generally in good agreement with predictions of the Koniuk-Isgur quark model.