Charmonium description from a generalized screened potential model

TL;DR

This paper applies a generalized screened potential model to charmonium, successfully describing known resonances and predicting new states, thus offering a more comprehensive understanding of charmonium spectrum.

Contribution

The paper extends the GSPM to charmonium, providing a unified framework that accounts for non conventional states and predicts new resonances.

Findings

GSPM describes known $J^{++}$ charmonium resonances well

Predicts new non cataloged $J^{++}$ charmonium states

Supports the feasibility of a comprehensive charmonium spectrum model

Abstract

A generalized screened potential model (GSPM), recently developed to study the bottomonium spectrum, is applied to the calculation of charmonium masses and electromagnetic widths. The presence in the GSPM of more quark-antiquark bound states than in conventional non screened potential models, allows for the assignment of GSPM states to cataloged non conventional $J^{++}$ charmonium resonances as well as for the prediction of new (non cataloged) $J^{++}$ states. The results obtained seem to indicate that a reasonable overall description of $J^{++}$ charmonium resonances is feasible.