On the Q^2 Dependence of Measured Polarized Structure Funtions

Details On the Q^2 Dependence of Measured Polarized Structure Funtions On the Q^2 Dependence of Measured Polarized Structure Funtions

1993-11-10

arxiv.org/abs/hep-ph/9311255v1

Phys.Lett. B320 (1994) 152-158; Erratum-ibid. B325 (1994) 538

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages (LaTex) + 4 figures (topdrawer, included at the end) CERN-TH 7023/93

Scientific paper

10.1016/0370-2693(94)90839-7

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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