Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 46: Theorie: QCD

T 46.7: Talk

Tuesday, March 26, 2019, 17:30–17:45, ST 8

Automatizing the calculation of the N-jettiness soft function — •Tobias Mohrmann — Universität Siegen

Whenever a QCD-scattering process is restricted to its soft region, soft functions emerge. They are essential ingrediants of factorization theorems within Soft-Collinear Effective Theory (SCET). In this talk I present a systematic framework for the calculation of soft functions which are defined in terms of N≥ 2 light-like Wilson lines for generic observables. For this purpose we introduce a phase space parametrization which allows the factorization of universal singularities for soft functions. The formalism is an extension of a method that some of my collaborators developed earlier for the calculation of dijet soft functions. We have implemented this framework using the public code "pySecDec" to compute 1-jettiness and 2-jettiness soft function numerically.