News of the WeekNuclear Physics

Dueling Experiments Close In on Source of Proton's Spin

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Science  04 Nov 2005:
Vol. 310, Issue 5749, pp. 757
DOI: 10.1126/science.310.5749.757a

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When searching for something, it can help to know where the thing isn't. So physicists are cheering results that eliminate one of three possible explanations of how the proton gets its spin.