The universal one-loop effective action

Research output: Contribution to journalArticlepeer-review

89 Citations (Scopus)
144 Downloads (Pure)

Abstract

We present the universal one-loop effective action for all operators of dimension up to six obtained by integrating out massive, non-degenerate multiplets. Our general expression may be applied to loops of heavy fermions or bosons, and has been checked against partial results available in the literature. The broad applicability of this approach simplifies one-loop matching from an ultraviolet model to a lower-energy effective field theory (EFT), a procedure which is now reduced to the evaluation of a combination of matrices in our universal expression, without any loop integrals to evaluate. We illustrate the relationship of our results to the Standard Model (SM) EFT, using as an example the supersymmetric stop and sbottom squark Lagrangian and extracting from our universal expression the Wilson coefficients of dimension-six operators composed of SM fields.

Original languageEnglish
Article number180
Number of pages34
JournalJournal of High Energy Physics
Volume2016
Issue number3
Early online date25 Mar 2016
DOIs
Publication statusPublished - Mar 2016

Keywords

  • Beyond standard model
  • Effective field theories
  • Higgs physics

Fingerprint

Dive into the research topics of 'The universal one-loop effective action'. Together they form a unique fingerprint.

Cite this