Assertion: deuteron's radius | /r/HasProperty | several standard deviations
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text: Mirroring the proton radius puzzle, the radius of the deuteron was several standard deviations smaller than the value inferred from previous spectroscopic measurements of electronic deuterium," the researchers, led by Randolf Pohl from the Max Planck Institute of Quantum Optics in Germany - who led the 2010 experiment - wrote in a (http://science.sciencemag.org/content/353/6300/669) new study published Friday in the journal Science.