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75 papers
Two-Loop Amplitude Reduction with HELAC
Giuseppe Bevilacqua, Dhimiter Canko, Costas Papadopoulos
We discuss recent progress towards extending the Helac framework to the calculation of two-loop amplitudes. A general algorithm for the automated computation of two-loop integrands…
Two-loop non-planar hexa-box integrals with one massive leg
Adam Kardos, Costas G. Papadopoulos, Alexander V. Smirnov +2
Based on the Simplified Differential Equations approach, we present results for the two-loop non-planar hexa-box families of master integrals. We introduce a new approach to obtain…
calculations for processes using Simplified Differential Equations
Dhimiter D. Canko, Federico Gasparotto, Luca Mattiazzi +2
We present the computation of the massless three-loop ladder-box family with one external off-shell leg using the Simplified Differential Equations (SDE) approach. We also discuss…
Multiscale pentagon integrals to all orders
Dhimiter D. Canko, Costas G. Papadopoulos, Nikolaos Syrrakos
We present analytical results for one-loop five-point master integrals with up to three off-shell legs. The method of canonical differential equations along with the Simplified Dif…
Analytic representation of all planar two-loop five-point Master Integrals with one off-shell leg
Dhimiter D. Canko, Costas G. Papadopoulos, Nikolaos Syrrakos
We present analytic expressions in terms of polylogarithmic functions for all three families of planar two-loop five-point Master Integrals with one off-shell leg. The calculation…
Internal Reduction method for computing Feynman Integrals
Costas G. Papadopoulos, Christopher Wever
A new approach to compute Feynman Integrals is presented. It relies on an integral representation of a given Feynman Integral in terms of simpler ones. Using this approach, we pres…