from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a meson involved in holding the nucleus together; produced as the result of high-energy particle collision
Sorry, no etymologies found.
The pi-meson, the messenger of the strong force that keeps the atomic nucleus together, has an unusual property.
Nambu's theory also claimed that the pi-meson was a composite particle today we know that it is composed of quarks.
- The many pi-meson decaysresulted in a collimated beam of muons and neutrinos.