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Uncertainties in the hadronic contribution to the QED vacuum polarization

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Zeitschrift für Physik C Particles and Fields

Abstract

We describe an updated evaluation of the hadronic contribution to the QED vacuum polarization. It is obtained from a dispersion integral over the measured cross section ofe + e −→hadrons.

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Author notes

  1. C. Verzegnassi

    Present address: Sezione di Trieste, Department of Theretical Physics Trieste and INFN, Italy

Authors and Affiliations

  1. Institut für Physik, Universität, D-5900, Siegen, Federal Republic of Germany

    H. Burkhardt

  2. Fakultät für Physik, Universität, D-4800, Bielefeld, Federal Republic of Germany

    F. Jegerlehner

  3. Department of Physics, University, I-00100, Rome, Italy

    G. Penso

  4. Theory Division, CERN, CN-1211, Geneva 23, Swirtzerland

    C. Verzegnassi

Authors
  1. H. Burkhardt
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  2. F. Jegerlehner
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  3. G. Penso
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  4. C. Verzegnassi
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Burkhardt, H., Jegerlehner, F., Penso, G. et al. Uncertainties in the hadronic contribution to the QED vacuum polarization. Z. Phys. C - Particles and Fields 43, 497–501 (1989). https://doi.org/10.1007/BF01506546

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  • DOI: https://doi.org/10.1007/BF01506546

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