Probing internal structure of Lambda(1405) in meson-baryon dynamics with chiral symmetry

Details Probing internal structure of Lambda(1405) in meson-baryon dynamics with chiral symmetry Probing internal structure of Lambda(1405) in meson-baryon dynamics with chiral symmetry

2011-03-12

arxiv.org/abs/1103.2418v2

Physics

Nuclear Physics

Nuclear Theory

Talk given at BARYONS'10, Osaka, Japan, 7-11 Dec 2010

Scientific paper

The internal structure of the resonant Lambda(1405) state is investigated based on meson-baryon coupled-channels chiral dynamics, by evaluating density distributions obtained from the form factors of the Lambda(1405) state. The form factors are extracted from current-coupled scattering amplitudes in which the current is coupled to the constituent hadrons inside Lambda(1405). Using several probe interactions and channel decomposition, we find that the resonant Lambda(1405) state is dominantly composed of widely spread Kbar around N, with a small fraction of the escaping pi Sigma component.

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