mass

Imagine a particle. What comes to mind? If you aren’t a theoretical particle physicist, chances are you picture a tiny ball, bobbing in space. But that’s not quite correct. One way to prove it: Try to imagine that tiny ball as a particle with no mass. If a particle has no mass, how can it exist?

The Higgs field gives mass to elementary particles, but most of our mass comes from somewhere else.

A possible explanation for the lightness of neutrinos could help answer some big questions about the universe.