Perturbative QCD predictions for the small $x$ behaviour of unpolarized and polarized deep inelastic scattering structure functions

dc.creatorKwiecinski, J.
dc.date1995-11-21
dc.date.accessioned2026-07-07T03:58:34Z
dc.date.available2026-07-07T03:58:34Z
dc.descriptionThe perturbative QCD predictions for the small $x$ behaviour of the nucleon structure functions $F_{2,L}(x,Q^2)$ and $g_1(x,Q^2)$ are summarized. The importance of the double logarithmic terms for the small $x$ behaviour of the spin structure function $g_1(x,Q^2)$ is emphasised. These terms correspond to the contributions containing the leading powers of $α_s ln(1/x)^2$ at each order of the perturbative expansion. In the non-singlet case they can be approximately accounted for by the ladder diagrams with quark (antiquark) exchange. We solve the corresponding integral equation with the running coupling effects taken into account and present estimate of the effective slope controlling the small $x$ behaviour of the non-singlet spin structure function $g_1(x,Q^2)$ of a nucleon.
dc.description12 pages, LATEX, 4 figures (uuencoded postscript)
dc.identifierhttps://arxiv.org/abs/hep-ph/9511375
dc.identifierhttp://arxiv.org/abs/hep-ph/9511375
dc.identifierActa Phys.Polon. B27 (1996) 893-910
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/45863
dc.subjectHigh Energy Physics - Phenomenology
dc.titlePerturbative QCD predictions for the small $x$ behaviour of unpolarized and polarized deep inelastic scattering structure functions
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