Upsilon Decays

TL;DR

This paper reviews recent experimental results on upsilon decays, highlighting improved measurements and new observations that test quantum chromodynamics and quarkonium models, primarily from CLEO III, BaBar, and Belle.

Contribution

It provides a comprehensive overview of recent advances in upsilon decay measurements, including first-time observations and precision improvements from multiple experiments.

Findings

Enhanced precision in upsilon decay measurements

First observations of certain decay modes

Comparisons with theoretical models of QCD and quarkonium

Abstract

Bound upsilon states and their decays provide a unique laboratory for testing QCD, LQCD, and quarkonium potential models. I review recent results, some of which are significant improvements in precision over previous measurements and others are first-time observations. While most of the results presented are from CLEO III there are also notable contributions from BaBar and Belle who have just begun to exploit their strong capabilities for studying bound state upsilons.