Decay Property of Axial-Vector Tetra-Quark Mesons

TL;DR

This paper investigates the decay properties of hidden-charm tetra-quark mesons, comparing theoretical estimates with experimental data, and discusses how specific collision signals can help identify accurate models of multi-quark mesons.

Contribution

It provides a decay analysis of hidden-charm tetra-quark mesons and suggests experimental signals to distinguish between different multi-quark models.

Findings

Estimated widths of tetra-quark mesons are compatible with experimental data.

Confirmation of eta-pi^0 peaks can help select realistic multi-quark meson models.

The study offers insights into decay properties relevant for identifying tetra-quark states.

Abstract

Decay property of hidden-charm tetra-quark mesons is studied. It is seen that estimated width of iso-triplet odd $\mathcal{C}$ partners of X(3872), although still crude, is compatible with the measured ones of Z_c(3900). It is pointed out that confirmation of an eta-pi^0 peak around 3.2 GeV indicated in gamma-gamma collisions gives a clue to select a realistic model of multi-quark mesons.