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On the Q^2 Dependence of Measured Polarized Structure Funtions

G. Altarelli·P. Nason·G. Ridolfi
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Abstract

We analyse the available data on the polarized asymmetries $A_1$ for proton, neutron and deuteron targets. We use a homogeneous and updated set of unpolarized structure functions to derive $g_1$ from $A_1$, and we accurately correct for the scaling violations in order to obtain $g_1(x,Q^2)$ with the same $Q^2$ for all $x$ values. The contribution to the $Q^2$ evolution of a possible large gluon polarized density is also considered. The implications for the Ellis-Jaffe and for the Bjorken sum rules are discussed.

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G. Altarelli, P. Nason, G. Ridolfi. 1993-11-10. On the Q^2 Dependence of Measured Polarized Structure Funtions. https://doi.org/10.1016/0370-2693(94)90839-7

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