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arXiv · 2411.07872

CWebGen -- A tool to study colour structure of scattering amplitudes in IR limit

Neelima Agarwal·Sourav Pal·Aditya Srivastav·Anurag Tripathi
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Abstract

Infrared singularities in perturbative Quantum Chromodynamics (QCD) are captured by the Soft function, which can be calculated efficiently using Feynman diagrams known as webs. The starting point for calculating Soft function using webs is to compute the web mixing matrices using a well known replica trick algorithm. We present a package implemented in Mathematica to calculate these mixing matrices. Along with the package, we provide several state-of-the art computations.

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Neelima Agarwal, Sourav Pal, Aditya Srivastav, Anurag Tripathi. 2024-11-12. CWebGen -- A tool to study colour structure of scattering amplitudes in IR limit. https://doi.org/10.1016/j.cpc.2025.109765

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