Oct 2016 - Sep 2017

An on-shell approach to one-loop amplitudes with massive fermions using unitarity cuts

by Francesco Buicini (IPPP)

Europe/London
OC218 (IPPP)

OC218

IPPP

Description
We show a new approach to compute one-loop amplitudes with massive fermions using unitarity cuts. With our procedure, the divergent on-shell cuts can be avoided and the additional information is extracted from the universal IR poles in 4-2ε dimensions and UV poles in 6-2ε dimensions. The aim is to address the formal problem of whether a purely on-shell formulation of amplitudes with masses is possible or not.