https://doi.org/10.1140/epjc/s10052-020-8047-y
Regular Article - Theoretical Physics
NNLO zero-jettiness beam and soft functions to higher orders in the dimensional-regularization parameter 
Institut für Theoretische Teilchenphysik (TTP), KIT, 76128, Karlsruhe, Germany
* e-mail: daniel.baranowski@kit.edu
Received:
14
April
2020
Accepted:
11
May
2020
Published online:
11
June
2020
We present the calculation of the next-to-next-to-leading order (NNLO) zero-jettiness beam and soft functions, up to the second order in the expansion in the dimensional regularization parameter . These higher order terms are needed for the computation of the next-to-next-to-next-to-leading order (
) zero-jettiness soft and beam functions. As a byproduct, we confirm the 
results for NNLO beam and soft functions available in the literature by Gaunt et al. (JHEP 4:113, 2014), Gaunt et al. (JHEP 8:20, 2014), Boughezal et al. (Phys Rev D 96:34001, 2017), Monni et al. (JHEP 8:10, 2011) and Kelley et al. (Phys Rev D 84:45022, 2011).
© The Author(s), 2020
