Two, three, many body systems involving mesons

Details Two, three, many body systems involving mesons Two, three, many body systems involving mesons

2011-10-31

arxiv.org/abs/1110.6827v1

Physics

Nuclear Physics

Nuclear Theory

Talk given in the International School of Nuclear Physics, Erice 2011

Scientific paper

In this talk we show recent developments on few body systems involving mesons. We report on an approach to Faddeev equations using chiral unitary dynamics, where an explicit cancellation of the two body off shell amplitude with three body forces stemming from the same chiral Lagrangians takes place. This removal of the unphysical off shell part of the amplitudes is most welcome and renders the approach unambiguous, showing that only on shell two body amplitudes need to be used. Within this approach, systems of two mesons and one baryon are studied, reproducing properties of the low lying $1/2^+$ states. On the other hand we also report on multirho and $K^*$ multirho states which can be associated to known meson resonances of high spin.

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