2005/12/31 by M. V. T. Machado, Magno V. T. Machado
Mathematics · Physics and Astronomy · #Color-glass condensate #Dipole #Formalism (music) #Geometry #Gluon #HERA #High-Energy Particle Collisions Research #Mathematical physics #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Renormalization #Scaling #Statistical physics #Twist #hep-ex #hep-ph
paper · pdf · doi:10.1140/epjc/s2006-02566-x
13 pages, 5 figures. Includes new analyzes as a comparison with NLO and NNLO QCD calculations. Some model predictions have been revised and title has a shorter version. Extended version to be published in European Physical Journal C
arxiv created 2006/04/11 · openalex publication_date 2006/05/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
At small-x, the structure function FL(x,Q2) is driven by the gluon content of the nucleon target and consequently it can unravel the underlying QCD dynamics in that region. In this work, one studies its behavior on photon virtuality Q2 at fixed energy within the color dipole formalism for models considering parton saturation effects. The reason is that they resum a wide class of higher-twist contributions, which have important influence in FL description towards low Q2. It is shown that the geometric scaling property holds for the longitudinal cross section. Moreover, the effective anomalous dimension in scaling dipole cross sections can be investigated by studing both the turn over and the large Q2 regions of the recent experimental measurements.