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

An Erratum to this article was published on 10 July 2020

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Abstract

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.

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Correspondence to Ennio Salvioni.

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ArXiv ePrint: 2003.05936

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Haisch, U., Ruhdorfer, M., Salvioni, E. et al. Singlet night in Feynman-ville: one-loop matching of a real scalar. J. High Energ. Phys. 2020, 164 (2020). https://doi.org/10.1007/JHEP04(2020)164

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Keywords

  • Beyond Standard Model
  • Effective Field Theories