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After repeated pounding, antihydrogen reveals its charge: Zero

January 20, 2016

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Per the Standard Model of Particle Physics, the electrical charge of matter and antimatter should be opposite and equal. But is that true? A University of California, Berkeley-led team used the antihydrogen trap of the ALPHA collaboration at CERN to test this by measuring the charges of these anti-atoms. By randomly hitting trapped antihydrogen with an electric field, they were able to determine that the anti-atom is neutral to 0.7 ppb: 20 times better than earlier bounds.Full Story

University of California, Berkeley

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