Double-Strangeness Molecular-Type Pentaquarks from Coupled-Channel Dynamics

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 vectormeson exchange interactions. Contrary to earlier statements, we show this model to also predict the existence of pentaquarks with double strangeness, at about 4500 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.

Automated summary

The existence of pentaquarks with strangeness content zero and one is a significant discovery in recent years in the field of hadron physics. These states can be explained as hadronic molecules and were predicted before their discovery based on a model using unitarized meson-baryon amplitudes obtained from vector meson exchange interactions. Contrary to previous beliefs, this model also predicts the existence of pentaquarks with double strangeness at approximately 4500 and 4600 MeV, which are generated through a specific and unique mechanism involving a strong coupling between the two heaviest meson-baryon states.