12–14 May 2022
University of Pittsburgh
US/Eastern timezone

On phase-space integrals with Heaviside functions

14 May 2022, 10:05
20m
Benedum Hall 157 (University of Pittsburgh)

Benedum Hall 157

University of Pittsburgh

Speaker

Daniel Baranowski

Description

In this talk I discuss peculiarities that arise in the computation of real-emission contributions to observables that contain Heaviside functions. Specifically I will discuss the calculation of the zero-jettiness soft function in SCET at next-to-next-to-next-to-leading order in perturbative QCD. The Heaviside functions prevent a direct use of multi-loop methods based on reverse unitarity. I will present a way to bypass this problem and illustrate key aspects of the calculation. Finally I will present some results for various non-trivial contributions to the zero-jettiness soft function.

Author

Daniel Baranowski

Co-authors

Kirill Melnikov (KIT) Maximilian Delto (Karlsruhe Institute of Technology (KIT)) Dr Chen-Yu Wang (KIT)

Presentation materials