Speaker
Dr
Aleksandrs Aleksejevs
(Memorial University of Newfoundland)
Description
Ab initio predictions of two-loop electroweak contributions to observables are increasingly essential for precision collider experiments, yet their evaluation remains very challenging. We connect recurrence techniques and dispersive method in order to evaluate complex multi-loop Feynman diagrams. By expressing multi-point Passarino-Veltman functions in a two-point basis and using shifted space-time dimensions with recurrence relations, we minimize the number of required dispersive integrals. This approach reduces computation time and enables a precise and efficient
analysis of one- and two-loop diagrams. This talk will highlight new developments coming from combination of recurrence approach with dispersive methods.
| Keyword-1 | two-loop calculations |
|---|---|
| Keyword-2 | dispersive insertions |
| Keyword-3 | recurrence relations |
Authors
Dr
Aleksandrs Aleksejevs
(Memorial University of Newfoundland)
Dr
Svetlana Barkanova
(Memorial University of Newfoundland)
Dr
Andrej Davydychev
(Memorial University of Newfoundland)