Strong charmonium decays in a microscopic model

TL;DR

This paper presents a microscopic model for calculating strong decays of vector charmonium into open-charm mesons, integrating interquark interactions consistent with the quark model used for spectra, and compares results with experimental data and other models.

Contribution

It introduces a microscopic approach to charmonium strong decays based on the same interquark interactions used for spectral calculations, providing a more consistent theoretical framework.

Findings

Numerical decay widths are compared with experimental data.

The model's predictions are contrasted with the $^{3}P_{0}$ decay model.

Discussion on how different potential terms influence decay widths.

Abstract

Although the spectra of heavy quarkonium systems have been successfully explained by certain QCD motivated potential models, their strong decays are still an open problem. We perform a microscopic calculation of vector charmonium strong decays into open-charm mesons where the $q\bar{q}$ pairs are created from the same interquark interactions acting in the quark model that has been used to describe its spectrum, and also its leptonic and radiative decays. We compare the numerical results with those predicted by the $^{3}P_{0}$ decay model and with the available experimental data, and discuss the possible influence on the strong widths of the different terms of the potential. A comparison with other predictions from similar microscopic decay models is also included.