'''Fermions''' are particles with half-integer spin that obey the Dirac-[[Enrico Fermi|Fermi]] statistics. The known elementary fermions are [[quark]]s and [[lepton]]s. Composite particles can also be fermions. | '''Fermions''' are particles with half-integer spin that obey the Dirac-[[Enrico Fermi|Fermi]] statistics. The known elementary fermions are [[quark]]s and [[lepton]]s. Composite particles can also be fermions. |