Quarks and Leptons

Quarks and Leptons

1. The Particle Zoo

   • Muon
     • Negatively charged particle with a rest mass of over 200 times that of the electron
     • Decays into an electron and antineutrino
     • Antimuon decays into a positron and neutrino
   • Pion
     • Can have positive, negative or neutral charge. Rest mass more than a muon but less than a proton.
     • Charged pion can decay into a muon and antineutrino or an antimuon and a neutrino.
     • Decays into high-energy photons if not charged.
   • Kaon
     • Positive, negative or neutral charge. Rest mass greater than a pion but less than a proton.
     • Can decay into pions, a muon and antineutrino, or an antimuon and a neutrino.

2. Particle Sorting

3. Leptons interact through the weak, gravitational and elcetromagnetic (if charged) interactions.

4. Hadrons can interact through all four fundamental interactions. They interact through the strong and if charged electromagnetic.

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