English

Three body systems with strangeness and exotic systems

Nuclear Theory 2011-04-28 v1

Abstract

We report on four Σ\Sigma's and three Λ\Lambda's, in the 1500 - 1800 MeV region, as two meson - one baryon S-wave (1/2)+(1/2)^+ resonances found by solving the Faddeev equations in the coupled channel approach, which can be associated to the existing SS = -1, JP=1/2+J^P= 1/2^+ low lying baryon resonances. On the other hand we also report on a new, hidden strangeness NN^* state, mostly made of KKˉNK \bar{K} N, with mass around 1920 MeV, which we think could be responsible for the peak seen in the γpK+Λ\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 ρ\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.

Keywords

Cite

@article{arxiv.1010.3647,
  title  = {Three body systems with strangeness and exotic systems},
  author = {E. Oset and A. Martinez Torres and K. P. Khemchandani and L. Roca},
  journal= {arXiv preprint arXiv:1010.3647},
  year   = {2011}
}

Comments

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

R2 v1 2026-06-21T16:30:11.820Z