Quarkonia: a theoretical frame

TL;DR

This paper presents a comprehensive theoretical framework for analyzing bound states of two heavy quarks, enabling precise studies of below-threshold states and systematic descriptions of above-threshold resonances, advancing understanding of quarkonium physics.

Contribution

It introduces a unified theoretical approach for heavy quark bound states, covering both below and above threshold phenomena, with detailed precision for certain systems.

Findings

Developed a precision framework for charmonium and bottomonium observables below threshold.

Provided a systematic description for some above-threshold resonances.

Enhanced understanding of heavy quarkonium states and their experimental signatures.

Abstract

We discuss a general theoretical framework for the study of bound states made of two heavy quarks. For states below threshold, the framework has been developed to the level of providing precision studies for several charmonium and bottomonium observables. For states above threshold, like some of the newly discovered charmonium-like resonances at the B factories, a systematic description exists so far only for specific systems.