Statut | Confirmé |
Série | LPT-PTH |
Domaines | hep-ph |
Date | Jeudi 22 Fevrier 2018 |
Heure | 16:00 |
Institut | LPT |
Salle | 114 |
Nom de l'orateur | Larsen |
Prenom de l'orateur | Kasper |
Addresse email de l'orateur | |
Institution de l'orateur | Southampton University |
Titre | Algebraic geometry applied to multi-loop scattering amplitudes |
Résumé | The computation of two-loop amplitudes forms a current bottleneck to computing precision- level cross sections for LHC phenomenology. In this talk I will discuss several new methods for analytic evaluation of two-loop amplitudes, drawing inspiration from algebraic geometry and modern unitarity. More specifically, the methods involve efficient determination of a basis of integrals in terms of which the amplitude is decomposed; derivation of the integral identities needed to perform the decomposition; and evaluation of the basis integrals via differential equations. The first step of determining a basis of integrals has been implemented in the publicly available code Azurite which I will discuss. I will also discuss future implementations of the methods and their application to computing the two-loop five-gluon QCD amplitude. |
Numéro de preprint arXiv | |
Commentaires | |
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