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

Mehrdad Goshtasbpour·Philip G. Ratcliffe
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Abstract

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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Mehrdad Goshtasbpour, Philip G. Ratcliffe. 2000-05-05. Phenomenology of g_1(x) in the Observed Small-x Region. https://arxiv.org/abs/hep-ph/9912334

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