If you want to explain what was and what is, you need particle physics. Because everything we see consists of molecules and atoms, and atoms in turn consist of atomic nuclei and electrons. The atomic ...

A committee-supported project or activity that has been completed and for which output dissemination has begun. Its committee has been disbanded and closeout procedures are underway. Elementary ...

Visit NAP.edu/10766 to get more information about this book, to buy it in print, or to download it as a free PDF. Elementary particle physics is the modern expression of the human quest to understand ...

On Nov. 11, 1974, two research teams rocked the particle physics world when they announced they had independently discovered a new subatomic particle – the J/psi. The particle’s existence called for a ...