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arXiv · 2404.14868

Monte Carlo evaluation of divergent one-loop integrals without contour deformation

Roberto Pittau
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Abstract

Reference [1] introduces a method for computing numerically four-dimensional multi-loop integrals without performing an explicit analytic contour deformation around threshold singularities. In this paper, we extend such a technique to massless scalar one-loop integrals regularized in the framework of dimensional regularization. A two-loop example is also discussed.

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Roberto Pittau. 2024-04-23. Monte Carlo evaluation of divergent one-loop integrals without contour deformation. https://doi.org/10.1140/epjc%2Fs10052-024-13109-6

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