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Fermions
Fermion
All elementary particles are either fermions
or bosons.
Fermions, named after
Enrico Fermi, are particles which form
totally-antisymmetric composite quantum states. As a result, they are
subject to the
Pauli exclusion principle and obey
Fermi-Dirac statistics. The
spin-statistics theorem states that fermions have half-integer
spin.
The
elementary particles which make up
matter are fermions, predominantly
quarks (which form
protons and
neutrons) and
electrons. These elementary fermions are classified into two groups:
leptons and
quarks.
Examples of fermions:
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