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arXiv · hep-ph/9702277

How Much of the Nucleon Spin is Carried by Glue?

Ian Balitsky·Xiangdong Ji
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Abstract

We estimate in the QCD sum rule approach the amount of the nucleon spin carried by the gluon angular momentum: the sum of the gluon spin and orbital angular momenta. The result indicates that gluons contribute at least one half of the nucleon spin at scale of 1 GeV^2.

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Ian Balitsky, Xiangdong Ji. 1997-02-10. How Much of the Nucleon Spin is Carried by Glue?. https://doi.org/10.1103/physrevlett.79.1225

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