Three body systems with strangeness and exotic systems

TL;DR

This paper investigates exotic baryon and meson states with strangeness, identifying new resonances and explaining observed peaks through solving Faddeev equations and modeling multi-rho meson systems.

Contribution

It reports new low-lying baryon resonances with strangeness and introduces a novel hidden strangeness N* state, linking theoretical models to experimental observations.

Findings

Identification of $rac{1}{2}^+$ resonances around 1500-1800 MeV

Prediction of a hidden strangeness $N^*$ state near 1920 MeV

Theoretical modeling of multi-$ ho$ meson states with high spin J=6

Abstract

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.