Oct 2016 - Sep 2017

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

## by Francesco Buicini (IPPP)

Friday, 24 February 2017 from to (Europe/London)
at IPPP ( OC218 )
 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.