QCD Seminars

Towards NNLO+PS matching with sector showers

by Christian Preuss (ETH Zürich)

Europe/Zurich
4/3-006 - TH Conference Room (CERN)

4/3-006 - TH Conference Room

CERN

100
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Description
Recent years have seen impressive progress on the combination of next-to-next-to-leading-order (NNLO) calculations and parton showers for processes of high phenomenological interest. However, as state-of-the-art parton showers typically fail to match the singularity structure of NNLO calculations, these methods do not provide the same level of theoretical control as fully-differential matching schemes that are available at next-to-leading order (NLO).
In this talk, I will outline a new technique for the fully-differential matching of final-state parton showers to NNLO calculations, focusing on the simplest case of leptonic collisions with two final-state jets. The strategy is facilitated by working in the antenna formalism, making use of NNLO antenna subtraction on the fixed-order side and the sector-antenna framework on the shower side. I will present the implementation of all required components in the VINCIA antenna shower in PYTHIA 8.3 and discuss the generalisation to processes involving initial-state partons.
Videoconference
QCD seminars
Zoom Meeting ID
62752332519
Host
Elena Gianolio
Alternative hosts
Alexander Yohei Huss, Pier Francesco Monni, Michelangelo Mangano, Samuel Abreu, Julien Baglio, Ben Page, Valentin Jonathan Hirschi
Passcode
37431264
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