4. Hadrons and Leptons

Hadrons:

- Hadrons are made up of quarks, and they are the only particles that are affected by the Strong Nuclear Force. The two types are Baryons and Mesons.

- Baryon examples are protons and neutrons. All baryons except protons are unstable and can decay eventually becoming a proton. They have 3 quarks.

- The Baryon number is a quantum number that must be conserved.

- Beta decay shows this conservation (this decay happens by the weak force, since other particles other than just Baryon's are involved);

            n -> p + e- + -Ve

            1 -> 1 +  0 +  0

- Mesons interact with Baryons via the Strong force. They are made up of a quark and antiquark.

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