Spin-5/2 resonance effects in a coupled channel nucleon resonance analysis

Details Spin-5/2 resonance effects in a coupled channel nucleon resonance analysis Spin-5/2 resonance effects in a coupled channel nucleon resonance analysis

2003-01-19

arxiv.org/abs/hep-ph/0301152v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

submitted to Phys. Rev. C

Scientific paper

Spin-$\ffh$ resonance contributions in pion-nucleon scattering are investigated within the coupled channel $K$-matrix approach for c.m. energies up to $\sqrt s=$ 2 GeV. All previously studied $\pi N$, $2\pi N$, $\eta N$, $K \Lambda$, $K \Sigma$, and $\omega N$ final states are included. We find a significant improvement of $\chi^2$ in almost all channels by inclusion of the spin-$\ffh$ states. The obtained coupling parameters are discussed.

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