The CP Puzzle in the Strong Interactions
arXiv:hep-ph/0110050
Abstract
This lecture, directed to an broad audience including non-specialists, presents a short review of the problem of strong CP symmetry maintenance. The problem is defined and the possible solutions briefly reviewed. I discuss the way in which Roberto Peccei and I came up with one solution, generally known as Peccei-Quinn symmetry.
Dirac Medal Lecture, July 2001