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  1. Antiparticle - Wikipedia

    • In particle physics, every type of particle of "ordinary" matter (as opposed to antimatter) is associated with an antiparticle with the same mass but with opposite physical charges (such as electric charge). For example, the antiparticle of the electron is the positron (also known as an antielectron). While the electron has a negative electric charge, the positron has a posi… 展开

    History

    In 1932, soon after the prediction of positrons by Paul Dirac, Carl D. Anderson found that cosmic-ray collisions produced these particles in a cloud chamber – a particle detector in which moving electrons (or positrons) lea… 展开

    Particle–antiparticle annihilation

    If a particle and antiparticle are in the appropriate quantum states, then they can annihilate each other and produce other particles. Reactions such as e + e → γ γ (the two-photon annihilation of an electron-positron pair) ar… 展开

     
  1. There is an antiparticle corresponding to most kinds of particle. It has the same mass and opposite electric charge. Even electrically neutral particles, such as the neutron, are not identical to their antiparticle. In the example of the neutron, the 'ordinary' particle is made out of quarks and the antiparticle out of antiquarks.
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  4. Antimatter - Wikipedia

  5. 反粒子 - 維基百科,自由的百科全書 - zh.wikipedia.org

  6. Positron - Wikipedia

    It is the antiparticle (antimatter counterpart) of the electron. When a positron collides with an electron, annihilation occurs. If this collision occurs at low energies, it results in the production of two or more photons.

  7. Antineutron - Wikipedia

  8. Antiparticle - Wikiwand

  9. Antiproton - Wikipedia

    The antiproton, p. , (pronounced p-bar) is the antiparticle of the proton. Antiprotons are stable, but they are typically short-lived, since any collision with a proton will cause both particles to be annihilated in a burst of energy. The …

  10. Antimatter - CERN

    ATRAP experiment makes world’s most precise measurement of antiproton magnetic moment. LHCb experiment observes new matter-antimatter difference. ALPHA first direct analysis on how antimatter is affected by gravity. CERN’s …

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  11. Antiparticle - Simple English Wikipedia, the free encyclopedia