Hidden-charm strong decays of the spin-$2$ partner of $X(3872)$

TL;DR

This paper investigates the decay properties of the hypothesized spin-2 partner of X(3872), using a covariant quark model to calculate decay widths and branching ratios, supporting its interpretation as a four-quark molecular state.

Contribution

It provides the first detailed calculation of decay widths and branching ratios for the X_2(4014) state within a covariant confined quark model, assuming a molecular four-quark structure.

Findings

Calculated decay widths for X_2 to ω J/Ψ and ρ^0 J/Ψ.

Analyzed the branching ratios of these decay channels.

Supported the four-quark molecular interpretation of X_2(4014).

Abstract

Hidden-charm strong decays of the spin-2 partner $X_2(4014)$ of the charmonium-like state $X(3872)$ have been studied in the framework of the covariant confined quark model. The exotic state $X_2$ has been interpreted as a four-quark state with molecular-type interpolating current. We have considered the decay widths of $X_2$ on the level of two-petal quark loops. The partial widths of the strong decays $X_2\!\to\!\omega \, J/\Psi$ and $X_2\!\to\!\rho^0 \, J/\Psi$ have been calculated and the related branching ratio has been analyzed.