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arXiv · 2004.03285

NNLO zero-jettiness beam and soft functions to higher orders in the dimensional-regularization parameter $ε$

Daniel Baranowski
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Abstract

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 $ε$. These higher order terms are needed for the computation of the next-to-next-to-next-to-leading order (N$^3$LO) zero-jettiness soft and beam functions. As a byproduct, we confirm the $O(ε^0)$ results for NNLO beam and soft functions available in the literature.

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Daniel Baranowski. 2020-04-07. NNLO zero-jettiness beam and soft functions to higher orders in the dimensional-regularization parameter $ε$. https://doi.org/10.1140/epjc%2Fs10052-020-8047-y

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