Unverified50% confidenceFactExact time
1988年CERN的欧洲缪子合作组（EMC）通过深度非弹性散射实验发现夸克自旋对质子总自旋的贡献仅约占20-30%，而非朴素夸克模型预测的100%，这被称为'质子自旋危机'
1
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50%
Confidence
Long-term
Relevance
8/21/2026
First Seen
Sources
Related Claims
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