Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 2: QCD (Theorie) 1

T 2.5: Vortrag

Montag, 21. März 2022, 17:15–17:30, T-H15

Automating the calculation of jet functions and beam functions in SCET — Guido Bell, •Kevin Brune, Goutam Das, and Marcel Wald — Center for Particle Physics Siegen, Theoretische Physik 1, Universität Siegen

In perturbative QCD large logarithms can arise in the computation of collider observables. These logarithms can be resummed via factorization theorems within Soft-Collinear Effective Theory(SCET). These factorization theorems include beam functions accounting for the initial-state collinear interactions and jet functions for the final-state collinear interactions. While these functions have been calculated case by case for different observables until now, we are investigating an automated approach for a general class of observables. For this, we study a general phase-space parameterization that factorizes the universal singularities of the functions. We have implemented this framework for different observables, by using the public code "pySecDec" to compute the next-to-next-to-leading order beam and jet function.