Two-Loop Four-Gluon Amplitudes from Numerical Unitarity.
Phys Rev Lett
; 119(14): 142001, 2017 Oct 06.
Article
en En
| MEDLINE
| ID: mdl-29053299
ABSTRACT
We present the first numerical computation of two-loop amplitudes based on the unitarity method. As a proof of principle, we compute the four-gluon process in the leading-color approximation. We discuss the new method, analyze its numerical properties, and apply it to reconstruct the analytic form of the amplitudes. The numerical method is universal, and can be automated to provide multiscale two-loop computations for phenomenologically relevant signatures at hadron colliders.
Texto completo:
1
Banco de datos:
MEDLINE
Tipo de estudio:
Qualitative_research
Idioma:
En
Año:
2017
Tipo del documento:
Article