Fundamental Matter Particles
Dividing things into smaller and smaller pieces
There are two kinds of fundamental constituents of matter,
leptons and quarks, which have shown no structure yet.
The leptons and quarks have three generations which
have the same properties except for the masses.
There are mysterious symmetries such as the doublet structure
and the correspondence between quarks and leptons
within each generation.
It is believed that there must be some deep reason to this.
What Distinguishes Particles?
Quantum numbers distinguish fundamental particles.
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