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

Pittau, Roberto

doi:10.1140/epjc/s10052-024-13109-6

s10052-024-13109-6.pdf (398.9Kb)

Identificadores

URI: https://hdl.handle.net/10481/93926

DOI: 10.1140/epjc/s10052-024-13109-6

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Editorial

Springer Nature

Fecha

2024-07-23

Referencia bibliográfica

Pittau, R. Monte Carlo evaluation of divergent one-loop integrals without contour deformation. Eur. Phys. J. C 84, 725 (2024). https://doi.org/10.1140/epjc/s10052-024-13109-6

Patrocinador

MICIU/AEI/10.1303 9/501100011033 and ERDF/EU (Grant PID2022-139466NB-C22); The SRA Grant PID2019-106087GB-C21 (10.13039/501100011033)

Resumen

Reference (Pittau and Webber in Eur Phys J C 82(1):55, https://doi.org/10.1140/epjc/s10052-022-10008-6, 2022) introduces a method for computing numerically fourdimensional 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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