Prospects for GPDs extraction with Double DVCS - CNRS - Centre national de la recherche scientifique
Proceedings/Recueil Des Communications Acta Physica Polonica B Proceedings Supplement Année : 2023

Prospects for GPDs extraction with Double DVCS

Résumé

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.

Dates et versions

hal-04063825 , version 1 (10-04-2023)

Identifiants

Citer

K. Deja, V. Martinez-Fernandez, P. Sznajder, J. Wagner, Bernard Pire. Prospects for GPDs extraction with Double DVCS. Acta Physica Polonica B Proceedings Supplement, 16 (7), pp.A24, 2023. ⟨hal-04063825⟩
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