Predicted charged charmonium-like structures in the hidden-charm dipion decay of higher charmonia

TL;DR

This paper predicts two charged charmonium-like structures near certain thresholds in the decay processes of higher charmonia, proposing experimental searches at BESIII, Belle, and BaBar to observe these phenomena.

Contribution

It introduces a novel prediction of charged charmonium-like structures using the Initial Single Pion Emission mechanism in specific decay channels of higher charmonia.

Findings

Prediction of two charged structures near D*D and D*D* thresholds.

Suggestion for experimental searches in specific invariant mass spectra.

Application of the ISPE mechanism to higher charmonia decays.

Abstract

In this work, we predict two charged charmonium-like structures close to the $D^\ast\bar{D}$ and $D^\ast\bar{D}^\ast$ thresholds, where the Initial Single Pion Emission mechanism is introduced in the hidden-charm dipion decays of higher charmonia $\psi(4040)$, $\psi(4160)$, $\psi(4415)$ and charmonium-like state Y(4260). We suggest BESIII to search for these structures in the $J/\psi\pi^+$, $\psi(2S)\pi^+$ and $h_b(1P)\pi^+$ invariant mass spectra of the $\psi(4040)$ decays into $J/\psi\pi^+\pi^-$, $\psi(2S)\pi^+\pi^-$ and $h_b(1P)\pi^+\pi^-$. In addition, the experimental search for these structures in the $J/\psi\pi^+$, $\psi(2S)\pi^+$ and $h_c(1P)\pi^+$ invariant mass spectra of the $\psi(4260)$ hidden-charm dipion decays will be accessible at Belle and BaBar.