| 21. | Particle-antiparticle annihilation will create EM radiation.
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| 22. | With the + subscript indicating the particle and " subscript for the antiparticle.
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| 23. | And each has its associated antiparticle : electron antineutrino, muon antineutrino and tau antineutrino.
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| 24. | According to the theory, matter can only be created in particle-antiparticle pairs.
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| 25. | Antiparticles are created everywhere in the universe where high-energy particle collisions take place.
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| 26. | Thus, antiparticles are represented as moving backward along the time axis in Feynman diagrams.
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| 27. | The only difference is that the value of the energy is negative for the antiparticle.
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| 28. | Even some chargeless bosons may not be their antiparticles such as some of the gluons.
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| 29. | The difference between a particle and its antiparticle is that the fundamental charges are opposite.
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| 30. | The Feynman Stueckelberg interpretation states that antimatter and antiparticles are regular particles traveling backward in time.
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