Low energy hadronic contribution to the QED vacuum polarization

Recent improvements in the low energy e+e- annihilation data and their influence on the determination of the hadronic contribution to the running of the QED fine structure constant at m_Z are discussed. Using CMD-2 and KLOE measurements in the rho region we obtain Delta alpha(5)_had(s) = 0.02758 +/-...

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Detalles Bibliográficos
Autores principales: Burkhardt, H, Pietrzyk, B
Lenguaje:eng
Publicado: 2005
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.72.057501
http://cds.cern.ch/record/847957
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author Burkhardt, H
Pietrzyk, B
author_facet Burkhardt, H
Pietrzyk, B
author_sort Burkhardt, H
collection CERN
description Recent improvements in the low energy e+e- annihilation data and their influence on the determination of the hadronic contribution to the running of the QED fine structure constant at m_Z are discussed. Using CMD-2 and KLOE measurements in the rho region we obtain Delta alpha(5)_had(s) = 0.02758 +/- 0.00035 at s = m_Z^2.
id cern-847957
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2005
record_format invenio
spelling cern-8479572019-09-30T06:29:59Zdoi:10.1103/PhysRevD.72.057501http://cds.cern.ch/record/847957engBurkhardt, HPietrzyk, BLow energy hadronic contribution to the QED vacuum polarizationParticle Physics - PhenomenologyRecent improvements in the low energy e+e- annihilation data and their influence on the determination of the hadronic contribution to the running of the QED fine structure constant at m_Z are discussed. Using CMD-2 and KLOE measurements in the rho region we obtain Delta alpha(5)_had(s) = 0.02758 +/- 0.00035 at s = m_Z^2.hep-ph/0506323oai:cds.cern.ch:8479572005-06-30
spellingShingle Particle Physics - Phenomenology
Burkhardt, H
Pietrzyk, B
Low energy hadronic contribution to the QED vacuum polarization
title Low energy hadronic contribution to the QED vacuum polarization
title_full Low energy hadronic contribution to the QED vacuum polarization
title_fullStr Low energy hadronic contribution to the QED vacuum polarization
title_full_unstemmed Low energy hadronic contribution to the QED vacuum polarization
title_short Low energy hadronic contribution to the QED vacuum polarization
title_sort low energy hadronic contribution to the qed vacuum polarization
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.72.057501
http://cds.cern.ch/record/847957
work_keys_str_mv AT burkhardth lowenergyhadroniccontributiontotheqedvacuumpolarization
AT pietrzykb lowenergyhadroniccontributiontotheqedvacuumpolarization

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