Gluon Polarization In Nucleon

Details Gluon Polarization In Nucleon Gluon Polarization In Nucleon

2010-06-12

arxiv.org/abs/1006.2435v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 8 figures. Accepted for publication in Phys.Lett.B

Scientific paper

In the context of the so-called valon model, we calculate $\frac{\delta g}{g}$ and show that although it is small and compatible with the measured values, the gluon contribution to the spin of nucleon can be sizable. The smallness of $\frac{\delta g}{g}$ in the measured kinematical region should not be interpreted as $\delta g$ being small. In fact, $\delta g$ itself at small x, and the first moment of the polarized gluon distribution in the nucleon, $\Delta g(Q^2)$, are large

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