Automation of Beam and Jet functions at NNLO

Automation of Beam and Jet functions at NNLO

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 an...

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Hauptverfasser: Bell, Guido, Brune, Kevin, Das, Goutam, Wald, Marcel
Format: Artikel
Sprache:eng
Schlagworte:
Physics - High Energy Physics - Phenomenology
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Beschreibung
Zusammenfassung: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.
DOI:10.48550/arxiv.2110.04804