Coupled channels calculation of a $\pi$ $\Lambda$ N quasibound state

We extend the study of a JP=2+, I=3/2 pion-Lambda-nucleon quasibound state [Phys. Rev. D 78, 014013 (2008)] by solving nonrelativistic Faddeev equations, using 3S1-3D1, Lambda N - Sigma N coupled channels Chiral Quark Model local interactions, and pion-nucleon and coupled pion-Lambda - pion-Sigma separable interactions fitted to the position and decay parameters of the Delta(1232) and Sigma(1385) resonances, respectively. The results exhibit a strong sensitivity to the p-wave pion-hyperon interaction, with a pion-Lambda-nucleon quasibound state persisting over a wide range of acceptable parametrizations.

13.75.Gx
11.80.Jy
14.20.Pt
13.75.Ev
coupled channel
Sigma(1385)
Delta(1232)
bound state: (pi Lambda nucleon)
quark model: chiral
nucleon hyperon: interaction

References(36)

Figures(0)

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