Those darned particle physicists...

Now you have to be careful. Just because electrons and muons are leptons doesn't mean they're hadrons too, although it is true that they are fermions like baryons, which are also hadrons. Mesons, however, are also hadrons, though they are bosons, and they include pions and kaons. Incidentally, protons and neutrons are nucleons that are baryons, which are hadrons that are fermions, made up of quark-quark-quark combinations held together by gluons, and sometimes they can give off photons, which are bosons but not mesons.


Highlights from living in Strasbourg last year.

Église St. Paul, Strasbourg, France