Exotic mesons with hidden charm as diquark-antidiquark states

TL;DR

This paper models exotic mesons with hidden charm and strange quark pairs as diquark-antidiquark systems, analyzing their interactions, decay modes, and predicting new states using dispersion relation techniques.

Contribution

It introduces a classification scheme for exotic mesons as diquark-antidiquark states and provides decay coefficients and predictions for new mesonic states.

Findings

Predicted new exotic meson states.

Classified mesons into nonet structures.

Analyzed meson-recombination into two-meson states.

Abstract

Exotic mesons with hidden strange ($s\bar s$) and heavy quark pairs ($Q\bar Q$), where $Q=c,b$, are considered as diquark-antidiquark systems, $(Qs)(\bar Q\bar s)$. Taking into account that these states can recombinate into two-meson ones, we study the interplay of these states in terms of the dispersion relation D-function technique. The classification of exotic mesons is discussed, coefficients for decay modes are given, predictions for new states are presented. The nonet structure for $((Qq)(\bar Q \bar q)$, ($(Qs)(\bar Q\bar s$)), ($(Qq)(\bar Q\bar s))$- states ($q=u,d$) is suggested.