Widths of tetraquarks with hidden charm

TL;DR

This paper develops relativistic four-quark equations within a coupled-channel framework to predict the masses and widths of hidden charm tetraquarks, considering meson-meson and four-quark state mixing.

Contribution

It introduces a novel relativistic formalism for calculating hidden charm tetraquark properties, incorporating dynamical mixing of meson-meson and four-quark states.

Findings

Predicted masses and widths of hidden charm tetraquarks.

Constructed four-quark amplitudes including u, d, s, and charm quarks.

Analyzed pole structures to determine resonance characteristics.

Abstract

The relativistic four-quark equations are found in the framework of coupled-channel formalism. The dynamical mixing of the meson-meson states with the four-quark states is considered. The four-quark amplitudes of the tetraquarks with hidden charm including u, d, s and charmed quarks are constructed. The poles of these amplitudes determine the masses and widths of tetraquarks.