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Type: Artigo de periódico
Title: The Small X Behavior Of The Gluon Structure Function From Total Cross-sections
Author: Luna E.G.S.
Natale A.A.
Zanetti C.M.
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 distribution function exhibits the power law xg(x, Q 2) = h(Q 2)x( -∈). 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. © 2008 World Scientific Publishing Company.
Rights: fechado
Identifier DOI: 10.1142/S0217751X08038019
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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