Mass spectrum of the axial-vector hidden charmed and hidden bottom tetraquark states

TL;DR

This paper uses QCD sum rules to systematically analyze the mass spectrum of axial-vector hidden charm and bottom tetraquark states, proposing the $Z^+(4430)$ as a potential axial-vector tetraquark.

Contribution

It provides a comprehensive mass spectrum analysis of axial-vector tetraquarks and suggests the $Z^+(4430)$ as an axial-vector tetraquark candidate.

Findings

Mass spectrum of axial-vector tetraquarks calculated

Identification of $Z^+(4430)$ as an axial-vector tetraquark

Systematic QCD sum rule analysis conducted

Abstract

In this article, we perform a systematic study of the mass spectrum of the axial-vector hidden charmed and hidden bottom tetraquark states using the QCD sum rules, and identify the $Z^+(4430)$ as an axial-vector tetraquark state tentatively.