Accurate and efficient amplitude predictions are essential for precision studies of multi-jet processes at the LHC. We introduce a novel neural network architecture that predicts multi-jet amplitudes by leveraging the Catani-Seymour factorization scheme and related lower-jet amplitudes, requiring the network to learn only a correction factor. This hybrid approach combines theoretical factorization with a data-driven ansatz, enabling fast and scalable amplitude predictions. Our networks also estimate the accuracy of each prediction, allowing us to selectively use results that meet a predefined accuracy threshold. In the context of leading-order event generation, this approach achieves speed-up factors of up to 20 while maintaining all observables at the percent-level accuracy.
@article{arxiv.2512.11036,
title = {Amplitude Surrogates for Multi-Jet Processes},
author = {Luca Beccatini and Fabio Maltoni and Olivier Mattelaer and Ramon Winterhalder},
journal= {arXiv preprint arXiv:2512.11036},
year = {2025}
}