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arXiv · 2511.15609

Assessing (H)EFT theory errors by pitting EoM against Field Redefinitions

Rodrigo Alonso·Christoph Englert·Wrishik Naskar·Shakeel Ur Rahaman
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Abstract

Truncations of effective field theory expansions are technically necessary but inherently intertwined with the redundancies of general field redefinitions. This can be viewed as a juxtaposition of power-counting and theoretical uncertainties, which seek to estimate neglected higher-dimensional interactions through approaches based on community consensus. One can then understand the invariance of physics under field redefinitions as a data-informed validation of different power-counting schemes, or as a means of assigning theoretical errors in comparison with algebraic, equation of motion-based replacements. Such an approach generalises widely accepted procedures for estimating theoretical uncertainties within the SM to non-renormalisable interactions. We perform a case study for a representative example in Higgs Effective Field theory, focusing on universal Higgs properties tensioned against process-dependent sensitivity expectations.

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Rodrigo Alonso, Christoph Englert, Wrishik Naskar, Shakeel Ur Rahaman. 2025-11-19. Assessing (H)EFT theory errors by pitting EoM against Field Redefinitions. https://doi.org/10.1007/jhep03(2026)199

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