Gluon polarization in the nucleon demystified

Details Gluon polarization in the nucleon demystified Gluon polarization in the nucleon demystified

2011-01-31

arxiv.org/abs/1101.5989v1

Phys.Rev.D84:041701,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages

Scientific paper

10.1103/PhysRevD.84.041701

Recently, X. Chen et al. proposed a new approach to the gauge invariant decomposition of the nucleon spin into helicity and orbital parts. The key ingredient in their construction is the separation of the gauge field into `physical' and `pure gauge' parts. We suggest a simple separation scheme and show that the resulting gluon helicity coincides with the first moment of the conventional polarized gluon distribution measurable in high energy experiments.

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