3 papers
hep-th2026
New Tools in the Landau Bootstrap
Piotr Bargieła, Giulio Crisanti, Craig Larkin +4
We describe recent advances in our understanding of the analytic structure of Feynman integrals. In particular, we describe two new classes of constraints on such integrals, that i…
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…