The authors propose that the off-forward pomeron and odderon amplitudes evolve as the sum and difference, respectively, of the corresponding forward amplitudes evaluated at rescaled momenta.
Infrared renormalon effects in color dipole TMD PDF at small-$x$
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abstract
The uncertainties from the infrared renormalons in the (color dipole) gluon distribution is estimated. It is shown that non-linear saturation effects at small-$x$ shift the first IR pole at the Borel plane from $2/\beta_2$ to $1/\beta_2$. As a consequence the estimated uncertainty is found to be ${\cal O}\left(\Lambda_{\rm QCD}^2\right)$ instead of ${\cal O}\left(\Lambda_{\rm QCD}^4\right)$.
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Small-$x$ evolution of dipole amplitude in momentum space: forward--off-forward correspondence
The authors propose that the off-forward pomeron and odderon amplitudes evolve as the sum and difference, respectively, of the corresponding forward amplitudes evaluated at rescaled momenta.