Szczegóły publikacji
Opis bibliograficzny
Computing multi-leg scattering amplitudes using light-cone actions / Hiren KAKKAD, Piotr KOTKO, Mateusz Kulig // Acta Physica Polonica . B, Proceedings Supplement ; ISSN 1899-2358. — 2024 — vol. 17 no. 5 art. no. 5-A12, s. 5-A12.1–5-A12.10. — Bibliogr. s. 5-A12.10, Abstr. — Publikacja dostępna online od: 2024-08-05. — 30th Cracow epiphany conference on Precision physics at high energy colliders : Cracow, Poland, 8-12 January, 2024
Autorzy (3)
Dane bibliometryczne
| ID BaDAP | 167035 |
|---|---|
| Data dodania do BaDAP | 2026-04-22 |
| Tekst źródłowy | URL |
| DOI | 10.5506/APhysPolBSupp.17.5-A12 |
| Rok publikacji | 2024 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Acta Physica Polonica, B, Proceedings Supplement |
Abstract
As is well known, computing multi-leg QCD scattering amplitudes using the standard elementary three- and four-particle vertices is cumbersome even at tree level, due to a number of diagrams growing dramatically with each external state. Over the last two decades, the problem was addressed in essentially two ways. The first approach uses the on-shell methods that try to eliminate fields as degrees of freedom whatsoever. The second approach is to construct a new field theory that contains new degrees of freedom that are more efficient in computing scattering amplitudes. One such example is the MHV action, which is based on the light-cone Yang- Mills action and where the new fields interact via multi-leg vertices related to the maximally-helicity-violating amplitudes. We discuss a further extension of such a theory, called the Z-field theory, which is obtained via the field transformation based on Wilson lines. Classically, it contains no triple couplings at all and thus is very efficient in computing tree amplitudes.
