The SM prediction of g-2 of the muon

We calculate (g-2)/2 of the muon, by improving the determination of the hadronic vacuum polarisation contribution, a_mu^{had,LO}, and its uncertainties. The different e+e- data sets for each exclusive (and the inclusive) channel are combined in order to obtain the optimum estimate of the cross secti...

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Detalles Bibliográficos
Autores principales: Hagiwara, K, Martin, A D, Teubner, Thomas, Nomura, Daisuke
Lenguaje:eng
Publicado: 2002
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(03)00138-2
http://cds.cern.ch/record/581466
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author Hagiwara, K
Martin, A D
Teubner, Thomas
Nomura, Daisuke
author_facet Hagiwara, K
Martin, A D
Teubner, Thomas
Nomura, Daisuke
author_sort Hagiwara, K
collection CERN
description We calculate (g-2)/2 of the muon, by improving the determination of the hadronic vacuum polarisation contribution, a_mu^{had,LO}, and its uncertainties. The different e+e- data sets for each exclusive (and the inclusive) channel are combined in order to obtain the optimum estimate of the cross sections and their uncertainties. QCD sum rules are evaluated in order to resolve an apparent discrepancy between the inclusive data and the sum of the exclusive channels. We conclude a_mu^{had,LO}=(683.1 +- 5.9_{exp} +- 2.0_{rad}) 10^{-10} which, when combined with the other contributions to (g-2)/2, is about 3 sigma below the present world average measurement.
id cern-581466
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
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spelling cern-5814662019-09-30T06:29:59Zdoi:10.1016/S0370-2693(03)00138-2http://cds.cern.ch/record/581466engHagiwara, KMartin, A DTeubner, ThomasNomura, DaisukeThe SM prediction of g-2 of the muonParticle Physics - PhenomenologyWe calculate (g-2)/2 of the muon, by improving the determination of the hadronic vacuum polarisation contribution, a_mu^{had,LO}, and its uncertainties. The different e+e- data sets for each exclusive (and the inclusive) channel are combined in order to obtain the optimum estimate of the cross sections and their uncertainties. QCD sum rules are evaluated in order to resolve an apparent discrepancy between the inclusive data and the sum of the exclusive channels. We conclude a_mu^{had,LO}=(683.1 +- 5.9_{exp} +- 2.0_{rad}) 10^{-10} which, when combined with the other contributions to (g-2)/2, is about 3 sigma below the present world average measurement.hep-ph/0209187CERN-TH-2002-233DCPT-2002-104IPPP-2002-52KEK-TH-844oai:cds.cern.ch:5814662002-09-17
spellingShingle Particle Physics - Phenomenology
Hagiwara, K
Martin, A D
Teubner, Thomas
Nomura, Daisuke
The SM prediction of g-2 of the muon
title The SM prediction of g-2 of the muon
title_full The SM prediction of g-2 of the muon
title_fullStr The SM prediction of g-2 of the muon
title_full_unstemmed The SM prediction of g-2 of the muon
title_short The SM prediction of g-2 of the muon
title_sort sm prediction of g-2 of the muon
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(03)00138-2
http://cds.cern.ch/record/581466
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AT martinad smpredictionofg2ofthemuon
AT teubnerthomas smpredictionofg2ofthemuon
AT nomuradaisuke smpredictionofg2ofthemuon

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