11. The process by which baryons came to outnumber their antiparticles is called baryogenesis. 12. There are also 12 fundamental fermionic antiparticles that correspond to these 12 particles. 13. Seen another way, the photon can be considered as its own antiparticle . 14. Vacuum fluctuations are always created as particle antiparticle pairs. 15. Is nothing made up of particle-antiparticle pairs? 16. The process by which this inequality between particles and antiparticles developed is called baryogenesis. 17. The laws of nature are very nearly symmetrical with respect to particles and antiparticles . 18. The antiparticles form the other doublet ( of strangeness & minus; 1 ). 19. The nonrelativistic analysis shows that with this form the antiparticle still has positive energy. 20. The quarks, leptons and W boson all have antiparticles with opposite electric charge.
