Study of photon electroproduction on the nucleon at high and low energy by Virtual Compton Scattering
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- 作者：M. Benali ; M. Mazouz ; H. Fonvieille
- 刊名：Physics of Particles and Nuclei
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：48
- 期：1
- 页码：69-75
- 全文大小：
- 刊物类别：Physics and Astronomy
- 刊物主题：Particle and Nuclear Physics;
- 出版者：Pleiades Publishing
- ISSN：1531-8559
- 卷排序：48
文摘
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 Q2 = 1.75 GeV2 and xB = 36 from Jefferson Lab experiment E08-025. VCS on the proton has been studied at Mainz Microtron MAMI at the four-momentum transfer squared Q2 = 0.5 GeV2, below the pion production threshold. In the second part of this paper we present our preliminary results of the structure functions (PLL − (PTT/ε)) and PLT, and the electric and magnetic generalized polarizabilities αE(Q2) and βM(Q2) extracted from this experiment.