What the study found
The study reports a new interface between PineAPPL and Matrix for producing fully differential cross sections as interpolation grids. These grids are described as accurate at next-to-next-to-leading order (NNLO, the level of precision in quantum chromodynamics calculations) in QCD and next-to-leading order in electroweak theory.
Why the authors say this matters
The authors say this is the first publicly available tool for calculating interpolation grids at NNLO QCD accuracy for a wide set of processes. They also state that interpolation grids allow predictions for arbitrary parton distribution functions (PDFs, which describe how quarks and gluons are distributed inside a proton) and PDF uncertainties without repeating the full calculation.
What the researchers tested
The researchers developed an interface between the PineAPPL and Matrix codes and used it to generate interpolation grids. They also made the new Matrix version and the grids produced for the publication available on the Matrix website and on the listed repository.
What worked and what didn't
According to the abstract, the interface works for calculating fully differential cross sections as interpolation grids with NNLO QCD and next-to-leading order electroweak accuracy. The abstract also says these grids can be used for global PDF analyses using exact NNLO calculations instead of K-factors, which the authors say have several drawbacks.
What to keep in mind
The abstract does not give performance details, validation results, or numerical comparisons. It also does not describe any limitations of the interface beyond noting that the work is presented as a new publicly available tool.
Key points
- A new PineAPPL-Matrix interface produces interpolation grids for fully differential cross sections.
- The grids are described as accurate at NNLO in QCD and next-to-leading order in electroweak theory.
- The authors say it is the first publicly available NNLO QCD grid tool for a wide set of processes.
- The abstract says the grids can be used for predictions with arbitrary PDFs and PDF uncertainties without repeating the full calculation.
- The authors say exact NNLO calculations are important for global PDF analyses and for future next-to-next-to-next-to-leading order PDF fits.
Disclosure
- Research title:
- PineAPPL-Matrix interface enables NNLO QCD interpolation grids
- Authors:
- Simone Devoto, Tomáš Ježo, Stefan Kallweit, Christopher Schwan
- Institutions:
- Koninklijk Nederlands Genootschap voor Fysiotherapie, University of Münster, University of Würzburg, University of Zurich
- Publication date:
- 2026-04-20
- OpenAlex record:
- View
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