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

Journal Article · Sun Jan 15 04:00:00 EST 2017 · Physics of Particles and Nuclei

DOI:https://doi.org/10.1134/S1063779617010038· OSTI ID:22979501

Mazouz, M. ^[1]; Fonvieille, H. ^[2]

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1. Faculté des Sciences de Monastir, Monastir (Tunisia)
2. Laboratoire de Physique Corpusculaire Clermont-Ferrand, IN2P3, Aubière Cedex (France)

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{sup 2} = 1.75 GeV{sup 2} and x{sub 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{sup 2} = 0.5 GeV{sup 2}, below the pion production threshold. In the second part of this paper we present our preliminary results of the structure functions (P{sub LL} − (P{sub TT}/ε)) and P{sub LT}, and the electric and magnetic generalized polarizabilities α{sub E}(Q{sup 2}) and β{sub M}(Q{sup 2}) extracted from this experiment.

• OSTI ID: 22979501
• Journal Information: Physics of Particles and Nuclei, Journal Name: Physics of Particles and Nuclei Journal Issue: 1 Vol. 48; ISSN 1063-7796
• Country of Publication: United States
• Language: English

Related Subjects

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COMPTON EFFECT
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PHOTONS
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STRUCTURE FUNCTIONS