Differentiable Multi-scale Effective Field Theory Likelihoods for Beyond the Standard Model Phenomenology
arXiv:2603.15801
Abstract
Probing heavy new physics beyond the Standard Model (SM) increasingly relies on global effective field theory (EFT) likelihoods. We introduce differentiable, multi-scale EFT likelihoods that combine renormalization-group evolution, matching, observable predictions, and experimental constraints in a single differentiable framework. This enables modern gradient-based frequentist and Bayesian inference in large parameter spaces. We demonstrate these capabilities in two 374-parameter SMEFT analyses, making basis-independent, fully multi-scale global EFT analyses feasible in practice.
34 pages, 3 figures, 4 tables. v2: data made available at https://doi.org/10.5281/zenodo.20072920