A Modern Introduction to Quarkonium Theory
arXiv:hep-ph/9811264 · doi:10.1142/S0217751X00000227
Abstract
Recent advances in lattice and continuum QCD have given us new insights into quarkonium physics. These set of lectures are intend for the uninitiated. We first give a physical picture of quarkonium and describe the hybrids states established in lattice QCD. Then we give an unorthodox presentation of Non-Relativistic QCD (NRQCD) including a novel method for the application of spin-symmetries. Finally we describe the prototypical application of NRQCD: cancellation of infrared divergences in decays of P-wave quarkonia.
36 pages, 20 figures, Lectures at the first Winter School on "Recent Developements in Hadron Physics" at the APCTP, Seoul, Korea, 1998; corrected some typos