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Singlet night in Feynman-ville: one-loop matching of a real scalar

A complete one-loop matching calculation for real singlet scalar extensions of the Standard Model to the Standard Model effective field theory (SMEFT) of dimension-six operators is presented. We compare our analytic results obtained by using Feynman diagrams to the expressions derived in the literature by a combination of the universal one-loop effective action (UOLEA) approach and Feynman calculus. After identifying contributions that have been overlooked in the existing calculations, we find that the pure diagrammatic approach and the mixed method lead to identical results. We highlight some of the subtleties involved in computing one-loop matching corrections in SMEFT.

preprint2020arXivOpen access
Ulrich HaischMaximilian RuhdorferEnnio SalvioniElena VenturiniAndreas Weiler
hep-ph
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Open access5 authors1 topic
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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Ulrich HaischMaximilian RuhdorferEnnio SalvioniElena VenturiniAndreas Weiler

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