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hep-th2025★ 1 cited
The spectrum of Feynman-integral geometries at two loops
Piotr Bargiela, Hjalte Frellesvig, Robin Marzucca +4
We provide a complete classification of the Feynman-integral geometries at two-loop order in four-dimensional Quantum Field Theory with standard quadratic propagators. Concretely,…
hep-ph2025
The integrand form of infrared singularities of two-loop QCD scattering amplitudes
Piotr Bargiela
In this work, we express the singular part of a scattering amplitude in terms of Feynman integrals compatible with topologies appearing in the bare amplitude, and we choose a basis…
hep-th2025
On the finite basis of two-loop `t Hooft-Veltman Feynman integrals
Piotr Bargiela, Tong-Zhi Yang
In this work, we investigate the finite basis topologies of two-loop dimensionally regularized Feynman integrals in the `t Hooft-Veltman scheme in the Standard Model. We present a…