Phenomenology of g_1(x) in the Observed Small-x Region

Details Phenomenology of g_1(x) in the Observed Small-x Region Phenomenology of g_1(x) in the Observed Small-x Region

1999-12-14

arxiv.org/abs/hep-ph/9912334v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX2e, 10 pages, 1 axodraw and 2 eps figure files, uses the axodraw, cite and epsfig packages, submitted to Phys. Lett. B. M

Scientific paper

We examine the behaviour of the polarised structure function data for g_1(x) in the region of small x (~0.01 to 0.1) for the various available targets (proton, neutron and deuteron) with the aim of clarifying what may be safely deduced with regard to the relation of the currently attained small-x region and the asymptotic behaviour as x -> 0. We find that fits using a single power-like term are susceptible to the isospin combination used. Double-power fits are more stable and also provide some evidence for an underlying SU(2) symmetry of the structure functions.

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