# Infrared Factorisation and Local Subtraction of Infrared Singularities for QCD processes

#### Infrared Factorisation and Local Subtraction of Infrared Singularities for QCD processes

- Event time: 2:00pm
- Event date: 18th September 2019
- Speaker: Chiara Signorile (University of Torino)
- Location: Higgs Centre Seminar Room, Room 4305, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB

### Event details

We review a recently proposed subtraction procedure at next-to- and next-to-next-to-leading order in QCD, based on the introduction of a set of minimal, local and analytically integrable counterterms. We also provide an operator definition for the counterterms by investigating the factorisation properties of a generic massless virtual amplitude. Our local, analytic scheme is designed for massless final state radiation only, but its main features are extensible to initial state radiation.

### About Particle Physics Theory seminars

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..