Effective field theories for heavy quarkonium

Nora Brambilla, Antonio Pineda, Joan Soto, Antonio Vairo

Published 2004-10-04, updated 2005-04-26Version 2

We review recent theoretical developments in heavy quarkonium physics from the point of view of Effective Field Theories of QCD. We discuss Non-Relativistic QCD and concentrate on potential Non-Relativistic QCD. Our main goal will be to derive QCD Schr\"odinger-like equations that govern the heavy quarkonium physics in the weak and strong coupling regime. We also discuss a selected set of applications, which include spectroscopy, inclusive decays and electromagnetic threshold production.