The apparent symmetry between matter and antimatter is puzzling scientists at the European Organization for Nuclear Research (CERN):
One of the great mysteries of modern physics is why antimatter did not destroy the universe at the beginning of time.
To explain it, physicists suppose there must be some difference between matter and antimatter – apart from electric charge. Whatever that difference is, it's not in their magnetism, it seems.
Physicists at CERN in Switzerland have made the most precise measurement ever of the magnetic moment of an anti-proton – a number that measures how a particle reacts to magnetic force – and found it to be exactly the same as that of the proton but with opposite sign. The work is described in Nature [open, DOI: 10.1038/nature24048] [DX].
"All of our observations find a complete symmetry between matter and antimatter, which is why the universe should not actually exist," says Christian Smorra, a physicist at CERN's Baryon–Antibaryon Symmetry Experiment (BASE) collaboration. "An asymmetry must exist here somewhere but we simply do not understand where the difference is."
Previously: Evidence Mounts that Neutrinos are the Key to the Universe's Existence
Matter-Antimatter Asymmetry Confirmed in Baryons
LHCb Observes an Exceptionally Large Group of Particles
Possible Explanation for the Dominance of Matter Over Antimatter in the Universe
(Score: 3, Informative) by HiThere on Friday October 27 2017, @05:44PM
First we need to find some negative matter of ANY persuasion. If we did, and we could handle it, it would be useful for such things as stabilizing the mouths of wormholes so they wouldn't collapse. At that point it would make sense to talk about details of how it worked. Currently it's a theory that's consistent with current physics, but isn't implied by it. I don't even know if the theory constrains it to be built out of protons and electrons in some not-yet-detected state. I suspect it doesn't, but that's well out of my field. I'd say ask Dr. Forward, but you'd need a seance.
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