# Non-local subtractions for collider processes

#### Non-local subtractions for collider processes

- Event time: 2:00pm until 3:00pm
- Event date: 9th March 2022
- Speaker: Dr Luca Rottoli (University of Zurich)
- 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

The availability of high-order calculations for LHC processes is central to the LHC precision programme. For the case of colour-singlet production, qT-subtraction is an efficient technique to reach NNLO accuracy and beyond. The generalisation of this technique to processes with jets is complicated by the presence of the multiple scales involved, which requires the accurate modelling of QCD in disparate kinematical regimes. A comprehensive theoretical understanding of jet-related observables can only be reached by studying jet processes both from a fixed order and an all-order perspective. In this seminar I will first discuss the application of non-local subtraction techniques to colour singlet production and I will present a N3LO calculation for neutral current Drell-Yan production within fiducial cuts. I will then introduce some observables which act as probes of QCD dynamics in the infrared region for processes with one or more jets. I will discuss potential applications of these observables both in higher order calculations based on non-local subtraction methods as well as in all-order computations.

#### Event resources

### 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..