Double strangeness molecular-type pentaquarks from coupled channel dynamics

TL;DR

This paper predicts the existence of double strangeness pentaquarks around 4500-4600 MeV using a coupled channel dynamics model, revealing a novel mechanism involving strong meson-baryon coupling.

Contribution

It extends previous models to predict double strangeness pentaquarks, demonstrating a unique formation mechanism via strong meson-baryon coupling.

Findings

Predicts double strangeness pentaquarks at 4500 and 4600 MeV

Identifies a specific attraction mechanism in meson-baryon interactions

Supports the molecular interpretation of pentaquarks

Abstract

The existence of pentaquarks with strangeness content zero and one are major discoveries of the latest years in hadron physics. Most of these states can be understood as hadronic molecules and were predicted prior to their discovery within a model based on unitarized meson-baryon amplitudes obtained from vector meson exchange interactions. Contrary to earlier statements, we show this model to also predict the existence of pentaquarks with double strangeness, at about 4500 MeV and 4600 MeV, which are generated in a very specific and unique mechanism, via an attraction induced by a strong coupling between the two heaviest meson-baryon states.