Spectroscopy of heavy-heavy flavour mesons and annihilation widths of quarkonia

TL;DR

This paper uses a nonrelativistic potential model to analyze heavy quarkonium annihilation processes, calculating widths for various decay channels and comparing results with existing data.

Contribution

It provides detailed calculations of annihilation widths, charge radii, and wave functions for heavy quarkonia and B_c mesons within the Cornell potential framework.

Findings

Calculated annihilation widths for multiple decay channels.

Compared theoretical results with experimental data.

Provided wave function characteristics at zero separation.

Abstract

Within the framework of nonrelativistic quark-antiquark Cornell potential model formalism, we study the annihilation of heavy quarkonia. We determine their annihilation widths resulting into digluon, dilepton, $3\gamma$, $3g$ and $\gamma gg$ and compare our findings with the available theoretical results and experimental data. We also provide the charge radii and absolute square of radial Schr\"odinger wave function at zero quark-antiquark separation for heavy quarkonia and $B_c$ mesons.