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Investigating the role of average color dipole size in BFKL Pomeron phenomenology

A. I. Lengyel·M. V. T. Machado
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Abstract

Based on the QCD dipole picture of the BFKL Pomeron, we investigate the role played by the saturation scale, Q_{sat}, in obtaining physical values for the affective strong coupling in phenomenological fits to small-x HERA data. The dependence on this scale appears since the collection of color dipoles characterizing the proton target have average size 1/Q_{sat}, which is energy dependent. Physically, this means most of the color dipoles are above but sufficiently close to the border between a saturated and the dilute system. The analysis is first performed in the leading-logs BFKL approach in the saddle-point approximation and it could shed light in further investigations using resummed NLO BFKL kernels

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A. I. Lengyel, M. V. T. Machado. 2005-03-30. Investigating the role of average color dipole size in BFKL Pomeron phenomenology. https://arxiv.org/abs/hep-ph/0503282

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