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 litera...

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Detalles Bibliográficos
Autores principales: Haisch, Ulrich, Ruhdorfer, Maximilian, Salvioni, Ennio, Venturini, Elena, Weiler, Andreas
Lenguaje:eng
Publicado: 2020
Materias:
hep-ph
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1007/JHEP04(2020)164
https://dx.doi.org/10.1007/JHEP07(2020)066
http://cds.cern.ch/record/2713134
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author Haisch, Ulrich
Ruhdorfer, Maximilian
Salvioni, Ennio
Venturini, Elena
Weiler, Andreas
author_facet Haisch, Ulrich
Ruhdorfer, Maximilian
Salvioni, Ennio
Venturini, Elena
Weiler, Andreas
author_sort Haisch, Ulrich
collection CERN
description 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.
id cern-2713134
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2020
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spelling cern-27131342023-10-04T06:01:40Zdoi:10.1007/JHEP04(2020)164doi:10.1007/JHEP07(2020)066http://cds.cern.ch/record/2713134engHaisch, UlrichRuhdorfer, MaximilianSalvioni, EnnioVenturini, ElenaWeiler, AndreasSinglet night in Feynman-ville: one-loop matching of a real scalarhep-phParticle Physics - PhenomenologyA 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.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.arXiv:2003.05936CERN-TH-2020-038TUM-HEP-1254-20oai:cds.cern.ch:27131342020-03-12
spellingShingle hep-ph
Particle Physics - Phenomenology
Haisch, Ulrich
Ruhdorfer, Maximilian
Salvioni, Ennio
Venturini, Elena
Weiler, Andreas
Singlet night in Feynman-ville: one-loop matching of a real scalar
title Singlet night in Feynman-ville: one-loop matching of a real scalar
title_full Singlet night in Feynman-ville: one-loop matching of a real scalar
title_fullStr Singlet night in Feynman-ville: one-loop matching of a real scalar
title_full_unstemmed Singlet night in Feynman-ville: one-loop matching of a real scalar
title_short Singlet night in Feynman-ville: one-loop matching of a real scalar
title_sort singlet night in feynman-ville: one-loop matching of a real scalar
topic hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP04(2020)164
https://dx.doi.org/10.1007/JHEP07(2020)066
http://cds.cern.ch/record/2713134
work_keys_str_mv AT haischulrich singletnightinfeynmanvilleoneloopmatchingofarealscalar
AT ruhdorfermaximilian singletnightinfeynmanvilleoneloopmatchingofarealscalar
AT salvioniennio singletnightinfeynmanvilleoneloopmatchingofarealscalar
AT venturinielena singletnightinfeynmanvilleoneloopmatchingofarealscalar
AT weilerandreas singletnightinfeynmanvilleoneloopmatchingofarealscalar

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