Quarkonium - Theory

TL;DR

This paper discusses recent theoretical developments in heavy quarkonium, emphasizing the need to go beyond simple quark-antiquark models and presenting progress on radiative transitions in bottomonium.

Contribution

It highlights the extension of quarkonium models beyond the basic quark-antiquark framework and reports recent advances in understanding bottomonium radiative transitions.

Findings

Extended quarkonium models beyond quark-antiquark picture

Progress in calculating bottomonium radiative transitions

Discussion of unresolved issues in heavy quarkonium theory

Abstract

Some recent issues in the theory of heavy quarkonium are discussed. Many of these deal with the need to extend the description of charmonium and bottomonium states beyond the simple quark-antiquark picture. Some recent progress on radiative transitions in bottomonium is also described.