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arXiv · 2110.04804

Automation of Beam and Jet functions at NNLO

Guido Bell·Kevin Brune·Goutam Das·Marcel Wald
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Abstract

We present a novel framework to streamline the calculation of jet and beam functions to next-to-next-to-leading order (NNLO) in perturbation theory. By exploiting the infrared behaviour of the collinear splitting functions, we factorise the singularities with suitable phase-space parametrisations and perform the observable-dependent integrations numerically. We have implemented our approach in the publicly available code {\tt pySecDec} and present first results for sample jet and beam functions.

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Guido Bell, Kevin Brune, Goutam Das, Marcel Wald. 2021-10-10. Automation of Beam and Jet functions at NNLO. https://arxiv.org/abs/2110.04804

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