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Type: Artigo de periódico
Title: The small x behavior of the gluon strucutre function from total cross-sections
Author: Luna, EGS
Natale, AA
Zanetti, CM
Abstract: Within a QCD-based eikonal model with a dynamical infrared gluon mass scale we discuss how the small x behavior of the gluon distribution function at moderate Q(2) is directly related to the rise of total hadronic cross-sections. In this model the rise of total cross-sections is driven by gluon-gluon semihard scattering processes, where the behavior of the small x gluon distribtuion function exhibits the power law xg(x, Q(2)) = h(Q(2))x(-epsilon). Assuming that the Q(2) scale is proportional to the dynamical gluon mass one, we show that the values of h(Q(2)) obtained in this model are compatible with an earlier result based on a specific nonperturbative Pomeron model. We discuss the implications of this picture for the behavior of input valence-like gluon distributions at low resolution scales.
Subject: dynamical gluon mass
gluon structure function
Country: Singapura
Editor: World Scientific Publ Co Pte Ltd
Citation: International Journal Of Modern Physics A. World Scientific Publ Co Pte Ltd, v. 23, n. 1, n. 151, n. 165, 2008.
Rights: fechado
Identifier DOI: 10.1142/S0217751X08038019
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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