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Polarized electron-proton scattering at highQ 2

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Zeitschrift für Physik A Atomic Nuclei

Abstract

We show that polarized electron-proton scattering is an excellent tool to measure helicity changing amplitudes. The asymmetry of polarized protons measured with longitudinally polarized electrons determines the ratio of Pauli (F 2) to Dirac (F 1) form factors. For the leading Fock state the Pauli form factor originates only from helicity changing quarkgluon interactions which are zero for zero quark masses. Therefore at high momentum transfer the ratioF 2/F 1 depends essentially on the up and down quark masses.

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Authors and Affiliations

  1. Institut für Theoretische Physik, Ruhr Universität Bochum, Federal Republic of Germany

    M. F. Gari & H. Hebach

  2. Institut für Kernphysik, Kernforschungsanlage Jülich, Federal Republic of Germany

    M. F. Gari & H. Hebach

Authors
  1. M. F. Gari
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  2. H. Hebach
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Gari, M.F., Hebach, H. Polarized electron-proton scattering at highQ 2 . Z. Physik A - Atomic Nuclei 328, 381–385 (1987). https://doi.org/10.1007/BF01289622

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  • DOI: https://doi.org/10.1007/BF01289622

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