Coupled channels calculation of a pion-Lambda-nucleon quasibound state

Details Coupled channels calculation of a pion-Lambda-nucleon quasibound state Coupled channels calculation of a pion-Lambda-nucleon quasibound state

2010-03-26

arxiv.org/abs/1003.5120v3

Phys.Rev.C81:055205,2010

Physics

Nuclear Physics

Nuclear Theory

references corrected, matches Phys. Rev. C version

Scientific paper

10.1103/PhysRevC.81.055205

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.

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