The curvature of $F_2^p(x,Q^2)$ as a probe of the range of validity of perturbative QCD evolutions in the small-$x$ region

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dc.creatorGlück, M.
dc.creatorPisano, C.
dc.creatorReya, E.
dc.date2006-10-05
dc.date2006-11-27
dc.date.accessioned2026-07-07T11:05:51Z
dc.date.available2026-07-07T11:05:51Z
dc.descriptionPerturbative NLO and NNLO QCD evolutions of parton distributions are studied, in particular in the (very) small-$x$ region, where they are in very good agreement with all recent precision measurements of $F_2^p(x,Q^2)$. These predictions turn out to be also rather insensitive to the specific choice of the factorization scheme ($\bar{\rm MS}$ or DIS). A characteristic feature of perturbative QCD evolutions is a {\em{positive}} curvature of $F_2^p$ which increases as $x$ decreases. This perturbatively stable prediction provides a sensitive test of the range of validity of perturbative QCD.
dc.description17 pages, 6 figures, 2 tables; minor corrections, to appear in EPJC
dc.identifierhttps://arxiv.org/abs/hep-ph/0610060
dc.identifierhttp://arxiv.org/abs/hep-ph/0610060
dc.identifierEur.Phys.J.C50:29-34,2007
dc.identifierdoi:10.1140/epjc/s10052-006-0189-z
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/189334
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleThe curvature of $F_2^p(x,Q^2)$ as a probe of the range of validity of perturbative QCD evolutions in the small-$x$ region
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