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arXiv · 2603.15801

Differentiable Multi-scale Effective Field Theory Likelihoods for Beyond the Standard Model Phenomenology

Aleks Smolkovič·Peter Stangl
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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.

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Aleks Smolkovič, Peter Stangl. 2026-03-16. Differentiable Multi-scale Effective Field Theory Likelihoods for Beyond the Standard Model Phenomenology. https://arxiv.org/abs/2603.15801

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