Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines hep-th
Date Vendredi 19 Fevrier 2021
Heure 15:00
Institut LPTENS
Salle GoToMeeting
Nom de l'orateur Wulzer
Prenom de l'orateur Andrea
Addresse email de l'orateur
Institution de l'orateur CERN and EPFL and Padua
Titre Goldstone Equivalence and High Energy Electroweak Physics
Résumé After a brief introduction to the type of questions that drive my research in general, I will illustrate specific results on the study of massive gauge theories at energies much above the mass of the vector bosons. In particular, I will present a novel formalism for all-orders perturbative calculations where power-counting (of mass/energy, and couplings) is manifest at the level of individual Feynman diagrams. The formalism might be used, practically, to simplify high-order calculations in the high energy regime, and theoretically to establish general properties of scattering amplitudes in kinematical configurations characterised by largely separated scales. This is illustrated by proving the simplest factorisation theorem (tree-level collinear factorisation) in the complete Standard Model theory. The result might be a step forward towards the understanding of the "IR problem" associated with Electroweak interactions. The talk is based on 1309.6055 and 1911.12366 .
Numéro de preprint arXiv 1911.12366
Commentaires Code: 418-109-349
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