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arXiv · 2403.03078

$N$-jettiness soft function at next-to-next-to-leading order in perturbative QCD

Prem Agarwal·Kirill Melnikov·Ivan Pedron
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Abstract

We derive a compact representation of the renormalized $N$-jettiness soft function that is free of infrared and collinear divergences through next-to-next-to-leading order in perturbative QCD. The number of hard partons $N$ is a parameter in the formula for the finite remainder. Cancellation of all infrared and collinear singularities between the bare soft function and its renormalization matrix in color space is demonstrated analytically.

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Prem Agarwal, Kirill Melnikov, Ivan Pedron. 2024-03-05. $N$-jettiness soft function at next-to-next-to-leading order in perturbative QCD. https://arxiv.org/abs/2403.03078

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