Dispersion relation for hadronic light-by-light scattering

The largest uncertainties in the Standard Model calculation of the anomalous magnetic moment of the muon (g - 2)_mu come from hadronic contributions. In particular, in a few years the subleading hadronic light-by-light (HLbL) contribution might dominate the theory uncertainty. We present a dispersiv...

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Detalles Bibliográficos
Autores principales: Procura, Massimiliano, Colangelo, Gilberto, Hoferichter, Martin, Stoffer, Peter
Lenguaje:eng
Publicado: 2016
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1051/epjconf/201611801030
http://cds.cern.ch/record/2263462
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author Procura, Massimiliano
Colangelo, Gilberto
Hoferichter, Martin
Stoffer, Peter
author_facet Procura, Massimiliano
Colangelo, Gilberto
Hoferichter, Martin
Stoffer, Peter
author_sort Procura, Massimiliano
collection CERN
description The largest uncertainties in the Standard Model calculation of the anomalous magnetic moment of the muon (g - 2)_mu come from hadronic contributions. In particular, in a few years the subleading hadronic light-by-light (HLbL) contribution might dominate the theory uncertainty. We present a dispersive description of the HLbL tensor, which is based on unitarity, analyticity, crossing symmetry, and gauge invariance. This opens up the possibility of a data-driven determination of the HLbL contribution to (g - 2)_mu with the aim of reducing model dependence and achieving a reliable error estimate.
id oai-inspirehep.net-1455735
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
record_format invenio
spelling oai-inspirehep.net-14557352019-09-30T06:29:59Zdoi:10.1051/epjconf/201611801030http://cds.cern.ch/record/2263462engProcura, MassimilianoColangelo, GilbertoHoferichter, MartinStoffer, PeterDispersion relation for hadronic light-by-light scatteringParticle Physics - PhenomenologyThe largest uncertainties in the Standard Model calculation of the anomalous magnetic moment of the muon (g - 2)_mu come from hadronic contributions. In particular, in a few years the subleading hadronic light-by-light (HLbL) contribution might dominate the theory uncertainty. We present a dispersive description of the HLbL tensor, which is based on unitarity, analyticity, crossing symmetry, and gauge invariance. This opens up the possibility of a data-driven determination of the HLbL contribution to (g - 2)_mu with the aim of reducing model dependence and achieving a reliable error estimate.oai:inspirehep.net:14557352016
spellingShingle Particle Physics - Phenomenology
Procura, Massimiliano
Colangelo, Gilberto
Hoferichter, Martin
Stoffer, Peter
Dispersion relation for hadronic light-by-light scattering
title Dispersion relation for hadronic light-by-light scattering
title_full Dispersion relation for hadronic light-by-light scattering
title_fullStr Dispersion relation for hadronic light-by-light scattering
title_full_unstemmed Dispersion relation for hadronic light-by-light scattering
title_short Dispersion relation for hadronic light-by-light scattering
title_sort dispersion relation for hadronic light-by-light scattering
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1051/epjconf/201611801030
http://cds.cern.ch/record/2263462
work_keys_str_mv AT procuramassimiliano dispersionrelationforhadroniclightbylightscattering
AT colangelogilberto dispersionrelationforhadroniclightbylightscattering
AT hoferichtermartin dispersionrelationforhadroniclightbylightscattering
AT stofferpeter dispersionrelationforhadroniclightbylightscattering

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