collinear factorisation 1gauge theory 1hidden regions 1method of regions 1scattering amplitudes 1soft and Glauber dynamics 1
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hep-ph2026
Infrared singularities and the collinear limits of multi-leg scattering amplitudes
Sebastian Jaskiewicz
Scattering amplitudes admit a factorised structure in special kinematic limits, such as the soft and collinear limits. In this work, we investigate the multi-particle collinear lim…
hep-ph2026
Spacelike-Collinear Scattering by the Method of Regions
Wen Chen, Einan Gardi, Rourou Ma +3
The paper analyses the spacelike‑collinear limit of gauge‑theory scattering amplitudes using the Method of Regions, identifying a hidden soft‑Glauber region that generates kinemati…
hep-ph2026
Progress on the soft anomalous dimension in QCD
Einan Gardi, Zehao Zhu
We review the state-of-the-art knowledge of IR singularities in multileg QCD amplitudes, identifying the key reasons for the remarkable simplicity of the soft anomalous dimension.…