#pseudoscalar #pion #hadron #quark #electron #proton #strong interaction #fermion #baryon #boson #subatomic particle #neutrino #spin #particle accelerator #electric charge #cosmic ray #weak interaction #mesotron #parity #antiquark #photon #mass #antiproton #rho meson #antiparticle #lepton #muon #antimatter #charm quark #bottom quark #electromagnetism #c-parity #exotic meson #g-parity #kaon #kaomoji