Is there a pion-Lambda-nucleon bound state?

Details Is there a pion-Lambda-nucleon bound state? Is there a pion-Lambda-nucleon bound state?

2008-05-15

arxiv.org/abs/0805.2334v3

Phys.Rev.D78:014013,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

version matching PRD publication, typos and references corrected

Scientific paper

10.1103/PhysRevD.78.014013

We have searched for bound states in the pion-Lambda-nucleon system by solving the nonrelativistic Faddeev equations, as well as a relativistic version, with input separable pion-nucleon, pion-Lambda, and Lambda-nucleon interactions. A bound-state solution, driven by the Delta(1232) and Sigma(1385) p-wave meson-baryon resonances, was found in the channel (I,JP)=(3/2,2+), provided the Lambda lab momentum at which the Lambda-nucleon S=1,L=0,J=1 phase shift becomes negative is larger than about 750-800 MeV/c. Other strange and charmed pion-baryon-baryon systems that might have bound states of a similar nature are listed.

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