Massive three-loop form factors: anomaly contribution

We compute three-loop corrections to the singlet form factors for massive quarks using a semianalytic method which provides precise results over the whole kinematic range. Particular emphasis is put on the anomaly contribution originating from an external axial-vector current. We also discuss in det...

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Detalles Bibliográficos
Autores principales: Fael, Matteo, Lange, Fabian, Schönwald, Kay, Steinhauser, Matthias
Lenguaje:eng
Publicado: 2023
Materias:
hep-ph
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.107.094017
http://cds.cern.ch/record/2848184
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author Fael, Matteo
Lange, Fabian
Schönwald, Kay
Steinhauser, Matthias
author_facet Fael, Matteo
Lange, Fabian
Schönwald, Kay
Steinhauser, Matthias
author_sort Fael, Matteo
collection CERN
description We compute three-loop corrections to the singlet form factors for massive quarks using a semianalytic method which provides precise results over the whole kinematic range. Particular emphasis is put on the anomaly contribution originating from an external axial-vector current. We also discuss in detail the contribution for a pseudoscalar current and verify the chiral Ward identity to three-loop order. Explicit results are presented for the low- and high-energy regions and the expansions around threshold.
id cern-2848184
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2023
record_format invenio
spelling cern-28481842023-10-12T05:31:17Zdoi:10.1103/PhysRevD.107.094017http://cds.cern.ch/record/2848184engFael, MatteoLange, FabianSchönwald, KaySteinhauser, MatthiasMassive three-loop form factors: anomaly contributionhep-phParticle Physics - PhenomenologyWe compute three-loop corrections to the singlet form factors for massive quarks using a semianalytic method which provides precise results over the whole kinematic range. Particular emphasis is put on the anomaly contribution originating from an external axial-vector current. We also discuss in detail the contribution for a pseudoscalar current and verify the chiral Ward identity to three-loop order. Explicit results are presented for the low- and high-energy regions and the expansions around threshold.We compute three-loop corrections to the singlet form factors for massive quarks using a semi-analytic method which provides precise results over the whole kinematic range. Particular emphasis is put on the anomaly contribution originating from an external axial-vector current. We also discuss in detail the contribution for a pseudoscalar current and verify the chiral Ward identity to three-loop order. Explicit results are presented for the low- and high-energy regions and the expansions around threshold.arXiv:2302.00693CERN-TH-2023-012P3H-23-006TTP23-002ZU-TH 05/23oai:cds.cern.ch:28481842023-02-01
spellingShingle hep-ph
Particle Physics - Phenomenology
Fael, Matteo
Lange, Fabian
Schönwald, Kay
Steinhauser, Matthias
Massive three-loop form factors: anomaly contribution
title Massive three-loop form factors: anomaly contribution
title_full Massive three-loop form factors: anomaly contribution
title_fullStr Massive three-loop form factors: anomaly contribution
title_full_unstemmed Massive three-loop form factors: anomaly contribution
title_short Massive three-loop form factors: anomaly contribution
title_sort massive three-loop form factors: anomaly contribution
topic hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.107.094017
http://cds.cern.ch/record/2848184
work_keys_str_mv AT faelmatteo massivethreeloopformfactorsanomalycontribution
AT langefabian massivethreeloopformfactorsanomalycontribution
AT schonwaldkay massivethreeloopformfactorsanomalycontribution
AT steinhausermatthias massivethreeloopformfactorsanomalycontribution

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