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Science 4 November 2005:
Vol. 310. no. 5749, p. 757
DOI: 10.1126/science.310.5749.757a
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News of the Week

NUCLEAR PHYSICS:
Dueling Experiments Close In on Source of Proton's Spin

Adrian Cho

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.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)