\(\varepsilon\)-factorized differential equations for two-loop non-planar triangle Feynman integrals with elliptic curves

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Publication:6057005

DOI10.1007/JHEP09(2023)187arXiv2305.13951MaRDI QIDQ6057005

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Publication date: 25 October 2023

Published in: (Search for Journal in Brave)

Abstract: In this paper, we investigate two-loop non-planar triangle Feynman integrals involving elliptic curves. In contrast to the Sunrise and Banana integral families, the triangle families involve non-trivial sub-sectors. We show that the methodology developed in the context of Banana integrals can also be extended to these cases and obtain varepsilon-factorized differential equations for all sectors. The letters are combinations of modular forms on the corresponding elliptic curves and algebraic functions arising from the sub-sectors. With uniform transcendental boundary conditions, we express our results in terms of iterated integrals order-by-order in the dimensional regulator, which can be evaluated efficiently. Our method can be straightforwardly generalized to other elliptic integral families and have important applications to precision physics at current and future high-energy colliders.


Full work available at URL: https://arxiv.org/abs/2305.13951



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