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antiproton |
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The scientists found telltale traces of the sigma-bs in the debris produced by more than 100 trillion collisions of protons and antiprotons that had occurred in the accelerator in the past 5 years. A normal, positively charged proton, for instance, finds its antimatter counterpart in a negatively charged antiproton. Untold numbers of electrons and positrons, protons and antiprotons, neutrons and antineutrons canceling each other out, leaving behind the small residue of protons, neutrons and electrons that today form the Earth, the solar system, and all the galaxies in the universe. |
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