Matter

• Particles


  • Bosons
  • Hadrons
  • Fermions
  • Photons
  • Mesons
  • Baryons
  • Leptons
  • Gluons
• Baryons have 3 quarks
• Baryons decay into protons
• Mesons are made from 1 quark and 1 antiquark
• Leptons are not affected by the strong nuclear force
• Leptons can change to other leptons via weak interactions
• Electrons, Muons, Neutrinos are leptons
• Leptons do not decay into protons
• Nucleons are protons and neutrons
• Lambda, Sigma, Omega are baryons
• Pions are the exchange particle for the strong nuclear force
• Kaons have a short lifetime and decay to pions
• Neutrinos are affected by the weak interaction
• Muons and neutrinos are affected by the weak interaction
• Fundamental forces


  • Weak
  • Strong
  • Electromagnetic
  • Gravity
• Baryon number is always conserved in strong interactions
• Baryon number changes by 0, -1, +1 in weak interactions
• Antiquark has a baryon number of -1/3
• Up quark has a charge of +2/3
• Down quark has a charge of -1/3
• Strange quark has a baryon number of -1/3
• what is the equation: E = Qv
• dE: Amc²
• h= 6.63x10^-34 Js
• e = 1.6 x 10^-19
• what is the mass of a proton 6.73x10^-27kg