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X-ray measurements in helium-like atoms increased discrepancy between experiment and theoretical QED
2014
New Journal of Physics
A recent 15 parts-per-million (ppm) experiment on muonic hydrogen found a major discrepancy with QED and independent nuclear size determinations. Here we find a significant discrepancy in a different type of exotic atom, a medium-Z nucleus with two electrons. Investigation of the data collected is able to discriminate between available QED formulations and reveals a pattern of discrepancy of almost 6 standard errors of experimental results from the most recent theoretical predictions with a
doi:10.1088/1367-2630/16/12/123037
fatcat:43ozjkbfobamxlittm77xdwwpq