Classification of Particles

Classification of Particles

1. Matter and Antimatter

   • Hadrons
     • Baryons
       • plus or minis one baryon number. no lepton number
       • 3 Quarks
       • Directly or indirectly decaying into a proton
     • Mesons
       • 0 lepton and baryon number
       • 1 Quark 1 Antiquark
       • dont' include protons in decay products
       • Pions
         • not strange
       • Kaons
         • strange a strange particle has -1 strangeness
   • Leptons
     • 0 baryon number  1 or minus 1 lepton number no quarks
     • Electrons
     • Muons
     • Neutrinos