Deeply virtual Compton scattering and generalized parton distributions at CLAS⋆

被引：0
作者：
S. Niccolai
机构：
[1] IPN,
来源：
The European Physical Journal A | 2008年 / 38卷
关键词：
13.40.Gp Electromagnetic form factors; 13.60.Fz Elastic and Compton scattering; 13.60.Hb Total and inclusive cross-sections (including deep-inelastic processes);
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摘要：
The exclusive electroproduction of real photons and mesons at high momentum transfer allows us to access the Generalized Parton Distributions (GPDs). The formalism of the GPDs provides a unified description of the hadronic structure in terms of quark and gluonic degrees of freedom. In particular, the Deeply Virtual Compton Scattering (DVCS), ep → e′p′γ , is one of the key reactions to determine the GPDs experimentally, as it is the simplest process that can be described in terms of GPDs. A dedicated experiment to study DVCS has been carried out in Hall B at Jefferson Lab. Beam-spin asymmetries, resulting from the interference of the Bethe-Heitler process and DVCS have been extracted over the widest kinematic range ever accessed for this reaction ( 1.2 < Q2 < 3.7 (GeV/c2, 0.09 < - t < 1.3 (GeV/c2, 0.13 < xB < 0.46 . In this paper, the results obtained experimentally are shown and compared to GPD parametrizations.
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页码：141 / 144
页数：3
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