12.8 Conservation Laws

12.8 Conservation Laws

All nuclear processes such as nuclear reactions and nuclear decays obey conservation laws such as:

1. conservation of energy, momentum and charge. It includes the nucleon number $N$ and charge number $Z$.
2. baryon number
3. lepton number

For your information

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Hadrons

• Mesons, e.g. pions, kaons
• Baryons, e.g. protons, neutrons, omega, sigma and lambda particles

Non-hadrons

• Leptons, including electrons, muon, neutrinos
• Photons, gravitons