\textsc{Collier}: a Fortran-based complex one-loop library in extended regularizations
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Publication:1685673
DOI10.1016/J.CPC.2016.10.013zbMATH Open1376.81070arXiv1604.06792OpenAlexW2344798499MaRDI QIDQ1685673
Author name not available (Why is that?)
Publication date: 19 December 2017
Published in: (Search for Journal in Brave)
Abstract: We present the library Collier for the numerical evaluation of one-loop scalar and tensor integrals in perturbative relativistic quantum field theories. The code provides numerical results for arbitrary tensor and scalar integrals for scattering processes in general quantum field theories. For tensor integrals either the coefficients in a covariant decomposition or the tensor components themselves are provided. Collier supports complex masses, which are needed in calculations involving unstable particles. Ultraviolet and infrared singularities are treated in dimensional regularization. For soft and collinear singularities mass regularization is available as an alternative.
Full work available at URL: https://arxiv.org/abs/1604.06792
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