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arXiv · 2606.07429

Interpolation between Sudakov and BFKL rapidity evolutions for TMD factorization at small $x$

Ian Balitsky
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Abstract

Within the framework of rapidity-only small-$x$ TMD factorization, the evolution with respect to the rapidity cutoff is initially governed by Sudakov double logarithms and subsequently by BFKL/BK single logarithms. The evolution equation proposed in this paper correctly reproduces both the Sudakov and BFKL limits, while providing a consistent interpolation between these two regimes.

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Ian Balitsky. 2026-06-05. Interpolation between Sudakov and BFKL rapidity evolutions for TMD factorization at small $x$. https://arxiv.org/abs/2606.07429

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