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Study of photon electroproduction on the nucleon at high and low energy by Virtual Compton Scattering

  • XIV International Seminar on Electromagnetic Interactions of Nuclei “EMIN-2015” Moscow, October 5–8, 2015
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Abstract

Virtual Compton Scattering (VCS) and Deeply Virtual Compton Scattering (DVCS) on the nucleon are two processes accessed via the photon electroproduction reaction (eN → eγN). In the first part of this paper we are interested by the DVCS on the neutron. We measured the (D(e, eγ)X-H(e, e'γ)X) unpolarized cross section and we extracted, for the first time, a non-zero contribution of (neutron-DVCS + coherent- deuteron-DVCS) at Q 2 = 1.75 GeV2 and x B = 36 from Jefferson Lab experiment E08-025. VCS on the proton has been studied at Mainz Microtron MAMI at the four-momentum transfer squared Q 2 = 0.5 GeV2, below the pion production threshold. In the second part of this paper we present our preliminary results of the structure functions (P LL − (P TT/ε)) and P LT, and the electric and magnetic generalized polarizabilities α E (Q 2) and β M (Q 2) extracted from this experiment.

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Authors and Affiliations

  1. Laboratoire de Physique Corpusculaire Clermont-Ferrand, IN2P3, 63177, Aubière Cedex, France

    M. Benali & H. Fonvieille

  2. Faculté des Sciences de Monastir, 5000, Monastir, Tunisia

    M. Benali & M. Mazouz

Authors
  1. M. Benali
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  2. M. Mazouz
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  3. H. Fonvieille
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Correspondence to M. Benali.

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For the Hall A DVCS collaboration

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Benali, M., Mazouz, M. & Fonvieille, H. Study of photon electroproduction on the nucleon at high and low energy by Virtual Compton Scattering. Phys. Part. Nuclei 48, 69–75 (2017). https://doi.org/10.1134/S1063779617010038

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  • DOI: https://doi.org/10.1134/S1063779617010038

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