Analysis of the mass and width of the $Y(4274)$ as axialvector molecule-like state

TL;DR

This paper investigates the nature of the $Y(4274)$ particle, using QCD sum rules to analyze its mass and width, and suggests it may be a conventional charmonium state rather than a molecule-like state.

Contribution

The study constructs a specific axialvector current to analyze the $Y(4274)$ and provides detailed QCD sum rule calculations of its mass and width, offering insights into its possible structure.

Findings

Predicted mass supports $Y(4274)$ as a molecule-like state.

Predicted width disfavors the molecule-like interpretation.

Suggests $Y(4274)$ may be the $ ext{chi}_{c1}(3P)$ charmonium state.

Abstract

In this article, we assign the $Y(4274)$ to be the color octet-octet type axialvector molecule-like state with $J^{PC}=1^{++}$ tentatively, and construct the color octet-octet type axialvector current to study its mass and width with the QCD sum rules in details. The predicted mass favors assigning the $Y(4274)$ to be the color octet-octet type molecule-like state, but the predicted width disfavors assigning the $Y(4274)$ to be the color octet-octet type molecule-like state strongly. The $Y(4274)$ may be the conventional charmonium state $\chi_{c1}(\rm 3P)$, and it is important to observe the decay $Y(4274)\to J/\psi \omega$ to diagnose the nature of the $Y(4274)$.