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pro vyhledávání: '"J. Jesús Aguilera-Verdugo"'
Mathematical properties of nested residues and their application to multi-loop scattering amplitudes
Autor:
J. Jesús Aguilera-Verdugo, Roger J. Hernández-Pinto, Germán Rodrigo, German F. R. Sborlini, William J. Torres Bobadilla
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 2, Pp 1-42 (2021)
Abstract The computation of multi-loop multi-leg scattering amplitudes plays a key role to improve the precision of theoretical predictions for particle physics at high-energy colliders. In this work, we focus on the mathematical properties of the no
Externí odkaz:
https://doaj.org/article/591274aa5be74e18af5e040170e92a37
Autor:
J. Jesús Aguilera-Verdugo, Roger J. Hernández-Pinto, Germán Rodrigo, German F. R. Sborlini, William J. Torres Bobadilla
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 1, Pp 1-26 (2021)
Abstract The numerical evaluation of multi-loop scattering amplitudes in the Feynman representation usually requires to deal with both physical (causal) and unphysical (non-causal) singularities. The loop-tree duality (LTD) offers a powerful framewor
Externí odkaz:
https://doaj.org/article/4fefbc482cc74ca1ab58d6410e835d99
Autor:
J. Jesús Aguilera-Verdugo, Félix Driencourt-Mangin, Judith Plenter, Selomit Ramírez-Uribe, Germán Rodrigo, Germán F.R. Sborlini, William J. Torres Bobadilla, Szymon Tracz
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 12, Pp 1-12 (2019)
Abstract We present the first comprehensive analysis of the unitarity thresholds and anomalous thresholds of scattering amplitudes at two loops and beyond based on the loop- tree duality, and show how non-causal unphysical thresholds are locally canc
Externí odkaz:
https://doaj.org/article/d02b9620543a4f399a8d0395287ea729