Unitarity boundary for deep inelastic structure functions

A. L. Ayala Fo*, M. B. Gay Ducati, E. M. Levin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


In this letter we derive the unitarity boundaries in QCD for the deep inelastic structure function in low x kinematic region: the Froissart boundary and a more restricted one, linked with experiment and based on additional assumptions, justified in the leading log approximation of perturbative QCD. The comparison of the unitarity boundaries with the new HERA experimental data gives rise to a challenge for QCD to explain the matching between the deep inelastic scattering and real photoproduction process.

Original languageEnglish
Pages (from-to)188-196
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1
StatePublished - 7 Nov 1996
Externally publishedYes


FundersFunder number
U.S. Departmenot f Energy
High Energy Physics
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Conselho Nacional de Desenvolvimento Científico e Tecnológico


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