Evaluation of Feynman integrals with arbitrary complex masses via series expansions
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Publication:6155471
DOI10.1016/J.CPC.2022.108545zbMATH Open1523.81077arXiv2205.03345WikidataQ114192584 ScholiaQ114192584MaRDI QIDQ6155471
Author name not available (Why is that?)
Publication date: 5 June 2023
Published in: (Search for Journal in Brave)
Abstract: We present an algorithm to evaluate multiloop Feynman integrals with an arbitrary number of internal massive lines, with the masses being in general complex-valued, and its implementation in the extsc{Mathematica} package extsc{SeaSyde}. The implementation solves by series expansions the system of differential equations satisfied by the Master Integrals. At variance with respect to other existing codes, the analytical continuation of the solution is performed in the complex plane associated to each kinematical invariant. We present the results of the evaluation of the Master Integrals relevant for the NNLO QCD-EW corrections to the neutral-current Drell-Yan processes.
Full work available at URL: https://arxiv.org/abs/2205.03345
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