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arXiv · 0706.2330

Three body resonances in two meson-one baryon systems

A. Martinez Torres·K. P. Khemchandani·E. Oset
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Abstract

We report four $Σ$'s and three $Λ$'s, in the 1500 - 1800 MeV region, as two meson - one baryon S-wave $(1/2)^+$ resonances. We solve Faddeev equations in the coupled channel approach. The invariant mass of one of the meson-baryon pairs and that of the three particles have been varied and peaks in the squared three body $T$-matrix have been found very close to the existing $S$ = -1, $J^P= 1/2^+$ low lying baryon resonances. The input two-body $t$-matrices for meson-meson and meson-baryon interaction have been calculated by solving the Bethe-Salpeter equation with the potentials obtained in the chiral unitary approach.

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A. Martinez Torres, K. P. Khemchandani, E. Oset. 2008-04-03. Three body resonances in two meson-one baryon systems. https://doi.org/10.1103/physrevc.77.042203

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