Positivity and unitarity constraints on dipole gluon distributions
classification
✦ hep-ph
keywords
constraintsdipoledistributionsgluonpositivityunitarityapplybuilding
read the original abstract
In the high-energy domain, gluon transverse-momentum dependent distributions in nuclei obey constraints coming from positivity and unitarity of the colorless QCD dipole distributions through Fourier-Bessel transformations. Using mathematical properties of Fourier-positive functions, we investigate the nature of these constraints which apply to dipole model building and formulation
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