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Guidal M.,Institute Of Physique Nucleaire Dorsay
EPJ Web of Conferences | Year: 2014

We briefly review some recent developments in the field of Generalized Parton Distributions (GPDs) and Deeply virtual Compton scattering in the valence region. First steps in the direction of nucleon imaging are presented. © Owned by the authors, published by EDP Sciences, 2014.


Niccolai S.,Institute Of Physique Nucleaire Dorsay
EPJ Web of Conferences | Year: 2014

Recent promising results, obtained at Jefferson Lab, on cross sections and asymmetries for DVCS and their link to the Generalized Parton Distributions are the focus of this paper. The extensive experimental program to measure DVCS with the 12-GeV-upgraded CEBAF in three experimental Halls (A, B, C) of Jefferson Lab, will also be presented. © Owned by the authors, published by EDP Sciences, 2014.


Jo H.S.,Institute Of Physique Nucleaire Dorsay
Nuovo Cimento della Societa Italiana di Fisica C | Year: 2013

Generalized parton distributions (GPDs) are nowadays the object of an intense effort of research. Among other aspects, they allow to unravel the correlation between the longitudinal momentum fraction and the transverse spatial distributions of quarks and gluons inside the nucleon, with the prospect of accessing the angular momentum contribution of the partons to the nucleon's spin. The Hall A and CLAS Collaborations of Jefferson Lab, or JLab, play a key role in the extraction of GPDs from deeply virtual Compton scattering (DVCS) and from deeply virtual meson production (DVMP). This topic is at the heart of the physics program for the upcoming JLab machine upgrade to 12 GeV. This report presents an overview (with a large focus on DVCS) of published results and ongoing analyses from JLab 6GeV data, and future experiments planned at JLab 12GeV, in Hall A and with the future CLAS12 detector in Hall B. © Società Italiana di Fisica.


Niccolai S.,Institute Of Physique Nucleaire Dorsay
Nuclear Physics B - Proceedings Supplements | Year: 2011

The experimental program to study nucleon structure at the 12-GeV upgraded JLab using the CLAS12 detector is presented here. The focus of this paper is on deeply virtual exclusive processes, giving access to the Generalized Parton Distributions, and semi-inclusive processes that allow extraction of Transverse Momentum Dependent distribution functions. With its wide acceptance, high luminosity, good resolution and particle identification capabilities, large Q2 and xB coverage (1


Niccolai S.,Institute Of Physique Nucleaire Dorsay
Progress in Particle and Nuclear Physics | Year: 2012

Recent promising results obtained with the Jefferson Lab CLAS detector on deeply virtual exclusive processes and their link to the generalized parton distributions, along with the experimental program for studying GPDs at the 12 GeV upgraded JLab using the CLAS12 detector, are discussed here. With its wide acceptance, high luminosity, good resolution and particle identification capabilities, as well as large Q 2 and x B coverage (1GeV< Q 2<10GeV 2, 0.1< x B<0.8), CLAS12 will be the ideal facility to pursue the research on the three-dimensional structure of the nucleon in the valence region. © 2012 Elsevier B.V. All rights reserved.

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