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High Energy Physics - Phenomenology

arXiv:1912.07590 (hep-ph)
[Submitted on 13 Dec 2019]

Title:Measuring the skewness dependency of Generalized Parton Distributions

Authors:Shengying Zhao, Eric Voutier
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Abstract:Generalized Parton Distributions (GPDs) have emerged over the 1990s as a powerful concept and tool to study nucleon structure. They provide nucleon tomography from the correlation between transverse position and longitudinal momentum of partons. The Double Deeply Virtual Compton Scattering (DDVCS) process consists of the Deeply Virtual Compton Scattering (DVCS) process with a virtual photon in the final state eventually generating a lepton pair, which can be either an electron-positron or a muon-antimuon pair. The virtuality of the final time-like photon can be measured and varied, thus providing an extra lever arm and allowing one to measure the GPDs for the initial and transferred momentum dependences independently. This unique feature of DDVCS is of relevance, among others, for the determination of the distribution of nuclear forces which is accessed through the skewness dependency of GPDs. This proceeding discusses the feasibility and merits of a DDVCS experiment in the context of JLab 12 GeV based on model-predicted pseudo-data and the capability of extraction of Compton Form Factors based on a fitter algorithm.
Comments: 6 pages, 6 figures, Proceedings of the 27th International Nuclear Physics Conference (INPC2019) to be published in JPCS. arXiv admin note: substantial text overlap with arXiv:1912.06604, arXiv:1904.09335
Subjects: High Energy Physics - Phenomenology (hep-ph); Nuclear Experiment (nucl-ex)
Cite as: arXiv:1912.07590 [hep-ph]
  (or arXiv:1912.07590v1 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1912.07590
Related DOI: https://doi.org/10.1088/1742-6596/1643/1/012198

Submission history

From: Shengying Zhao [view email]
[v1] Fri, 13 Dec 2019 16:41:38 UTC (306 KB)
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