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arXiv · 2609.07424

Connecting Regge factorization and Collins-Soper evolution

Andrea Simonelli
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Abstract

The relationship between Regge factorization of amplitudes and the Collins-Soper-Sterman factorization of hadronic cross sections is explored. Seeking a unified description of rapidity divergences in high-energy scattering and transverse-momentum-dependent factorization, a connection emerges between the Collins-Soper kernel and the Regge trajectory. This provides a framework for bridging high-energy and low-transverse-momentum resummation and for future extensions of $k_T$-factorization beyond leading-logarithmic accuracy.

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Andrea Simonelli. 2026-09-07. Connecting Regge factorization and Collins-Soper evolution. https://arxiv.org/abs/2609.07424

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