Three body systems with strangeness and exotic systems

Details Three body systems with strangeness and exotic systems Three body systems with strangeness and exotic systems

2010-10-18

arxiv.org/abs/1010.3647v1

Few Body Syst.50:129-135,2011

Physics

Nuclear Physics

Nuclear Theory

Talk at the 21st European Conference on Few Body Problems in Physics, Salamanca, Sep. 2010

Scientific paper

10.1007/s00601-010-0119-3

We report on four $\Sigma$'s and three $\Lambda$'s, in the 1500 - 1800 MeV region, as two meson - one baryon S-wave $(1/2)^+$ resonances found by solving the Faddeev equations in the coupled channel approach, which can be associated to the existing $S$ = -1, $J^P= 1/2^+$ low lying baryon resonances. On the other hand we also report on a new, hidden strangeness $N^*$ state, mostly made of $K \bar{K} N$, with mass around 1920 MeV, which we think could be responsible for the peak seen in the $\gamma p \to K^+ \Lambda$ around this energy. Finally we address a very novel topic in which we show how few body systems of several $\rho$ mesons can be produced, with their spins aligned up to J=6, and how these states found theoretically can be associated to several known mesons with spins J=2,3,4,5,6.

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