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Report number arXiv:2003.05936 ; CERN-TH-2020-038 ; TUM-HEP-1254-20
Title Singlet night in Feynman-ville: one-loop matching of a real scalar
Author(s) Haisch, Ulrich (Munich, Max Planck Inst.) ; Ruhdorfer, Maximilian (Munich, Tech. U.) ; Salvioni, Ennio (CERN) ; Venturini, Elena (Munich, Tech. U.) ; Weiler, Andreas (Munich, Tech. U.)
Imprint 2020-03-12. - 20 p.
Note 13 pages + appendices and references, 11 figures; v2: minor modifications to the text, one reference added. Matches version published in JHEP
In: JHEP 2004 (2020) 164
DOI 10.1007/JHEP04(2020)164 (publication)
Subject category hep-ph ; Particle Physics - Phenomenology
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.
Copyright/License publication: © 2020 The Authors (License: CC-BY-4.0)
preprint: (License: arXiv nonexclusive-distrib 1.0)

Corresponding record in: Inspire

 Record created 2020-03-17, last modified 2020-05-02

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