Deep probe of antimatter puts Einstein’s special relativity to the test

http://www.sciencemag.org/news/2016/12/deep-probe-antimatter-puts-einstein-s-special-relativity-test

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After 2 decades of work, Jeffrey Hangst and experimenters with ALPHA-2 can now make and trap antihydrogen atoms by the dozen.

CERN

Deep probe of antimatter puts Einstein’s special relativity to the test
By Adrian ChoDec. 19, 2016 , 11:45 AM

After decades of effort, physicists have probed the inner working of atoms of antihydrogen—the antimatter version of hydrogen—by measuring for the first time a particular wavelength of light that they absorb. The advance opens the way to precisely comparing hydrogen and antihydrogen and, oddly, testing the special theory of relativity—Albert Einstein’s 111-year-old theory of how space and time appear to observers moving relative to one another, which, among other things, says that nothing can move faster than light.

"It's a stunning result," says Alan Kostelecky, a theorist at Indiana University in Bloomington who was not involved in the work. For decades, experimenters have dreamed of measuring the spectrum of light absorbed by antihydrogen, Kostelecky says. "Here it is. They're doing it now."

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