# Taming Deeply Virtual Compton Scattering - High Energy Physics - Phenomenology

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Abstract: We study recent Deeply Virtual Compton scattering DVCS data within a dualparameterization of the Generalized Parton Distributions GPDs. Thisparameterization allows to quantify the maximum amount of information, that canbe extracted from DVCS data, in a quintessence- function. We present azero step- model for the latter solely based on the forward quark density,providing a parameter free prediction for the imaginary part of the DVCSamplitude. It is shown that the bulk effect of the $e p \to e p \gamma$ beamhelicity asymmetry can be understood within such a model.

Autor: Maxim V. Polyakov, Marc Vanderhaeghen

Fuente: https://arxiv.org/