Apr 25 – 30, 2022
Europe/Berlin timezone

Recent developments within the MATRIX framework

Apr 26, 2022, 10:00 AM
Rosner Aula

Rosner Aula


Stefan Kallweit (Università degli Studi di Milano-Bicocca)


The MATRIX framework was originally developed to compute diboson production
at next-to-next-to-leading order (NNLO) accuracy in QCD perturbation theory
by means of the qT-subtraction method, building upon the MUNICH integrator and
the external scattering amplitudes.
In its second official release of last summer, this framework was extended in
several directions, in particular by including NLO EW corrections and leading
N³LO effects from NLO QCD corrections to the loop-induced gluon fusion channels.
In this talk I will present the MATRIX framework with a focus on the new
features added in this latest public version.
Moreover, I will discuss further recent developments built upon the MATRIX machinery:
the application to triphoton production as a first 2->3 scattering process of the
triboson process class;
the extension of the qT subtraction method towards massive coloured final
states and its application on heavy-quark pair production and beyond;
the first complete calculation of mixed NNLO QCD-EW corrections to the
charged- and neutral-current Drell-Yan processes, based on an abelianized version
of this heavy-quark extension;
inclusion of recoil-driven linear power corrections to improve the convergence in
dedicated back-to-back configurations, in particular for the Drell-Yan process.

Primary author

Stefan Kallweit (Università degli Studi di Milano-Bicocca)

Presentation materials