Universal scalar leptoquark action for matching

Abstract In this study we present a universal effective action for one-loop matching of all scalar leptoquarks. We use both the Universal One-Loop Effective Action (UOLEA) and covariant diagrams to evaluate the Wilson coefficients directly in the Green basis for up to dimension-6 operators. On the t...

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Autores principales:	Athanasios Dedes, Kostas Mantzaropoulos
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Beyond Standard Model Effective Field Theories Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/3dbee545e034499bb07ef4fec2066b7b
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spelling	oai:doaj.org-article:3dbee545e034499bb07ef4fec2066b7b2021-11-28T12:40:38ZUniversal scalar leptoquark action for matching10.1007/JHEP11(2021)1661029-8479https://doaj.org/article/3dbee545e034499bb07ef4fec2066b7b2021-11-01T00:00:00Zhttps://doi.org/10.1007/JHEP11(2021)166https://doaj.org/toc/1029-8479Abstract In this study we present a universal effective action for one-loop matching of all scalar leptoquarks. We use both the Universal One-Loop Effective Action (UOLEA) and covariant diagrams to evaluate the Wilson coefficients directly in the Green basis for up to dimension-6 operators. On the technical side, we use the newly developed method of evaluating supertraces, to further validate the results stemming from the use of covariant diagrams. As an application, we perform a fully functional matching onto Standard Model Effective Field Theory (SMEFT) of a model with two scalar leptoquark fields: a weak isospin singlet and a doublet. We demonstrate its use by calculating several observables, such as lepton magnetic and electric dipole moments, neutrino masses, proton decay rate, while we comment upon fine tuning issues in this model. Apart from its phenomenological interest, this model generates the majority of dimension-6 operators and provides an EFT benchmark towards future matching automation.Athanasios DedesKostas MantzaropoulosSpringerOpenarticleBeyond Standard ModelEffective Field TheoriesNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENJournal of High Energy Physics, Vol 2021, Iss 11, Pp 1-65 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Beyond Standard Model Effective Field Theories Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Beyond Standard Model Effective Field Theories Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Athanasios Dedes Kostas Mantzaropoulos Universal scalar leptoquark action for matching
description	Abstract In this study we present a universal effective action for one-loop matching of all scalar leptoquarks. We use both the Universal One-Loop Effective Action (UOLEA) and covariant diagrams to evaluate the Wilson coefficients directly in the Green basis for up to dimension-6 operators. On the technical side, we use the newly developed method of evaluating supertraces, to further validate the results stemming from the use of covariant diagrams. As an application, we perform a fully functional matching onto Standard Model Effective Field Theory (SMEFT) of a model with two scalar leptoquark fields: a weak isospin singlet and a doublet. We demonstrate its use by calculating several observables, such as lepton magnetic and electric dipole moments, neutrino masses, proton decay rate, while we comment upon fine tuning issues in this model. Apart from its phenomenological interest, this model generates the majority of dimension-6 operators and provides an EFT benchmark towards future matching automation.
format	article
author	Athanasios Dedes Kostas Mantzaropoulos
author_facet	Athanasios Dedes Kostas Mantzaropoulos
author_sort	Athanasios Dedes
title	Universal scalar leptoquark action for matching
title_short	Universal scalar leptoquark action for matching
title_full	Universal scalar leptoquark action for matching
title_fullStr	Universal scalar leptoquark action for matching
title_full_unstemmed	Universal scalar leptoquark action for matching
title_sort	universal scalar leptoquark action for matching
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/3dbee545e034499bb07ef4fec2066b7b
work_keys_str_mv	AT athanasiosdedes universalscalarleptoquarkactionformatching AT kostasmantzaropoulos universalscalarleptoquarkactionformatching
_version_	1718407828048183296

Universal scalar leptoquark action for matching

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