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High Energy Physics - Phenomenology

arXiv:2304.03704 (hep-ph)
[Submitted on 7 Apr 2023]

Title:Prospects for GPDs extraction with Double DVCS

Authors:K. Deja, V. Martinez-Fernandez, B. Pire, P. Sznajder, J. Wagner
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Abstract:Double deeply virtual Compton scattering (DDVCS) is the process where an electron scatters off a nucleon and produces a lepton pair. The main advantage of this process in contrast with deeply virtual and timelike Compton scatterings (DVCS and TCS) is the possibility of directly measuring GPDs for $x\neq\pm\xi$ at leading order in $\alpha_s$ (LO). We present a new calculation of the DDVCS amplitude based on the methods developed by R. Kleiss and W. J. Stirling in the 1980s. These techniques produce expressions for amplitudes that are perfectly suited for implementation in numerical simulations. Via the PARTONS software, the correctness of this new formulation has been tested by comparing the DVCS and TCS limits of DDVCS with independent calculations of DVCS and TCS.
Comments: 5 pages, 4 figures, proceedings for the XXIX Cracow Epiphany Conference
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex); Nuclear Experiment (nucl-ex); Nuclear Theory (nucl-th)
Report number: CPHT-PC013.032023
Cite as: arXiv:2304.03704 [hep-ph]
  (or arXiv:2304.03704v1 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.2304.03704

Submission history

From: Víctor Martínez-Fernández [view email]
[v1] Fri, 7 Apr 2023 15:40:32 UTC (698 KB)
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