hidden charm decays of $X(4014)$ in a $D^{*}\bar{D}^{*}$ molecule scenario

TL;DR

This paper investigates whether the newly observed structure $X(4014)$ can be explained as a $D^* ar{D}^*$ molecular state by analyzing its hidden charm decay channels and proposing experimental searches.

Contribution

It provides a theoretical evaluation of $X(4014)$ as a molecular state and estimates decay widths for specific channels, suggesting experimental detection methods.

Findings

Partial decay widths for $J/\psi \omega$, $\eta_c \eta$, and $\eta_c \eta'$ channels are estimated.

$X(4014)$ is consistent with a $D^* \bar{D}^*$ molecular state hypothesis.

Proposes searching for $X(4014)$ in the $\gamma \gamma \to J/\psi \omega$ process at Belle II.

Abstract

Inspired by the recent observation of a new structure, $X(4014)$, in the process $\gamma\gamma\to \gamma\psi(2S)$, we evaluate the possibility of assigning $X(4014)$ as a $D^\ast \bar{D}^\ast$ molecular state with $I(J^{PC})=0(0^{++})$ by investigating the hidden charm decays of $X(4014)$. The partial widths of $J/\psi\omega$, $ \eta_{c}\eta$ and $\eta_{c}\eta^{\prime}$ channels are evaluated to be about $(0.41\sim 5.00)$, $(2.05\sim7.49)$ and $(0.11\sim0.51)\ \mathrm{MeV}$, respectively. Considering the experimental observation and the present estimations, we proposed to search $X(4014)$ in the $\gamma \gamma \to J/\psi \omega$ process in Belle II.