Widths of tetraquarks with open charm

TL;DR

This paper develops a relativistic coupled-channel formalism to calculate the masses and widths of open-charm tetraquarks, considering meson-meson and four-quark state mixing, providing theoretical predictions for their properties.

Contribution

It introduces a novel relativistic four-quark equation framework incorporating dynamical mixing of meson-meson and four-quark states for open-charm tetraquarks.

Findings

Calculated masses and widths of open-charm tetraquarks.

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

Identified poles corresponding to tetraquark states.

Abstract

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