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

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 Schrödinger wave function at zero quark-antiquark separation for heavy quarkonia and $B_c$ mesons.

Accepted for publication in Few-Body Systems

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• Charmonium
• Observation of structure in the $J/\psi$-pair mass spectrum
• Observation of an exotic narrow doubly charmed tetraquark
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• Precision measurement of the $B_c^{+}$ meson mass
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Cited by in corpus (2)

• Simple high-accuracy method for solving bound-state equations with the Cornell potential in momentum space
• Heavy quarkonium decay $V\to ggg$ with both relativistic and QCD radiative corrections