Nonexistence of a $ηNN$ quasibound state

Details Nonexistence of a $ηNN$ quasibound state Nonexistence of a $ηNN$ quasibound state

2000-10-24

arxiv.org/abs/nucl-th/0010081v1

Phys.Rev. C63 (2001) 021001

Physics

Nuclear Physics

Nuclear Theory

Submitted to Phys. Rev C (Rapid Communication)

Scientific paper

10.1103/PhysRevC.63.021001

We have solved the Faddeev equations for $\eta d$ elastic scattering using realistic separable interactions for the $NN$ and coupled $\eta N$-$\pi N$ subsystems. We found that including explicitly the pion channel in the integral equations drastically reduces the attraction that is present in the system. As a consequence, the existence of a $\eta NN$ quasibound state is excluded by the modern $\eta N$ amplitude analysis.

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