Universal non-resonant explanation to charmoniumlike structures $Z_c(3885)$ and $Z_c(4025)$

TL;DR

This paper offers a universal non-resonant explanation for the charmoniumlike structures $Z_c(3885)$ and $Z_c(4025)$, attributing them to reflection effects from $D_1(2420)$ in $e^+e^- o D^{(*)}ar{D}^*\pi$, challenging tetraquark interpretations.

Contribution

It introduces a non-resonant dynamical model explaining $Z_c$ structures as reflection effects, providing a new perspective distinct from tetraquark hypotheses.

Findings

$Z_c(3885)$ and $Z_c(4025)$ are reflections, not resonances.

The explanation is based on the behavior of $e^+e^- o D^{(*)}ar{D}^*\pi$.

The model can be tested by future experiments like BESIII and BelleII.

Abstract

Different from the usual tetraquark assignment to charged $Z_c(3885)$ and $Z_c(4025)$ charmoniumlike structures, in this letter we propose a universal non-resonant explanation to decode these $Z_c$'s, which is based on a special dynamical behavior of $e^+e^-\to D^{(*)}\bar{D}^*\pi$. Our study shows that $Z_c(3885)$ and $Z_c(4025)$ are only the reflection from the $P$-wave charmed meson $D_1(2420)$ involved in $e^+e^-\to D^{(*)}\bar{D}^*\pi$. Obviously, the present work provides a unique perspective, which can be examined by future experiments like BESIII and BelleII.