SciPost Submission Page
NNLOJET: a parton-level event generator for jet cross sections at NNLO QCD accuracy
by A. Huss, L. Bonino, O. Braun-White, S. Caletti, X. Chen, J. Cruz-Martinez, J. Currie, Y. S. Dai, W. Feng, G. Fontana, E. Fox, R. Gauld, A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover, M. Höfer, P. Jakubčík, M. Jaquier, M. Löchner, F. Lorkowski, I. Majer, M. Marcoli, P. Meinzinger, F. Merlotti, J. Mo, T. Morgan, J. Niehues, J. Pires, C. T. Preuss, A. Rodriguez Garcia, K. Schönwald, R. Schürmann, V. Sotnikov, G. Stagnitto, H. T. Sun, D. Walker, S. Wells, J. Whitehead, T. Z. Yang, H. Zhang
Submission summary
| Authors (as registered SciPost users): | Alexander Huss · Peter Meinzinger · Giovanni Stagnitto · James Whitehead |
| Submission information | |
|---|---|
| Preprint Link: | https://arxiv.org/abs/2503.22804v2 (pdf) |
| Code repository: | https://nnlojet.hepforge.org |
| Code version: | v1.0.2 |
| Code license: | GPLv3 |
| Date submitted: | Jan. 15, 2026, 9:07 a.m. |
| Submitted by: | Alexander Huss |
| Submitted to: | SciPost Physics Codebases |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approaches: | Theoretical, Computational, Phenomenological |
Abstract
The antenna subtraction method for NNLO QCD calculations is implemented in the NNLOJET parton-level event generator code to compute jet cross sections and related observables in electron-positron, lepton-hadron and hadron-hadron collisions. We describe the open-source NNLOJET code and its usage.
Author comments upon resubmission
Acting on the recommendations of the two reviewers, we have made the modifications summarised in the List of changes below.
Several other points raised by the referees (more detailed validations of individual process implementations and for technical settings used in multi-run combinations) are, to our understanding, already covered extensively in the relevant NNLOJET-related publications cited in the appropriate contexts. We therefore refrain from repeating these discussions in the code-release paper.
Several other points raised by the referees (more detailed validations of individual process implementations and for technical settings used in multi-run combinations) are, to our understanding, already covered extensively in the relevant NNLOJET-related publications cited in the appropriate contexts. We therefore refrain from repeating these discussions in the code-release paper.
List of changes
We have made the following modifications to the manuscript:
- We have extended the referencing of available NNLO QCD codes to also include single-process codes.
- Explicit consent from the authors of third-party codes included in the NNLOJET distribution, for which licensing provisions were previously unclear, was obtained prior to the original code release and manuscript submission. This fact is now stated explicitly in the paper.
- We have added an appendix documenting the example of Z+jet production at NNLO, including a complete input runcard, a discussion of the run-card parameters, performance figures, and reference output.
- For other processes supported by NNLOJET, further details on example runcards and the corresponding generated histograms are made available at https://nnlojet.hepforge.org/examples.html
In addition, the author list has been extended to include three junior collaborators who have made significant contributions to the NNLOJET code in the period following the initial manuscript submission: Y. S. Dai (Shandong University), F. Merlotti (ETH Zurich), and H. T. Sun (Shandong University). The funding acknowledgements have also been updated accordingly.
Current status:
Refereeing in preparation