Sep 9 – 13, 2019
Europe/Zurich timezone

Top-quark hadroproduction in NNLO QCD

Sep 10, 2019, 9:30 AM
25m
Cubiculaire

Cubiculaire

Speaker

Simone Devoto (UZH)

Description

The study of top-quark production and decay is central in the LHC physics programme, allowing precise tests of the Standard Model and offering a window on possible new physics. Accurate theoretical predictions are crucial for these analyses. In this talk, we report on a new calculation of the next-to-next-to-leading order QCD radiative corrections to the production of top-quark pairs at hadron colliders. The calculation is performed by using the qT-subtraction method to handle and cancel infrared singular contributions at intermediate stages of the computation, and represents its first complete application to the hadroproduction of a colourful high-mass system at next-to-next-to-leading order. We discuss the calculation of the additional soft contributions needed to implement qT subtraction for this process, and show first numerical results.

Primary authors

Javier Mazzitelli Massimiliano Grazzini (Universitaet Zuerich (CH)) Simone Devoto (UZH) Stefan Kallweit (Universita & INFN, Milano-Bicocca (IT)) Stefano Catani (Universita e INFN, Firenze (IT))

Presentation materials