Taming Deeply Virtual Compton Scattering

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

We study recent Deeply Virtual Compton scattering (DVCS) data within a dual parameterization of the Generalized Parton Distributions (GPDs). This parameterization allows to quantify the maximum amount of information, that can be extracted from DVCS data, in a ``quintessence'' function. We present a ``zero step'' model for the latter solely based on the forward quark density, providing a parameter free prediction for the imaginary part of the DVCS amplitude. It is shown that the bulk effect of the $e p \to e p γ$ beam helicity asymmetry can be understood within such a model.
4 pages, 3 figures, results corrected for factor 2 in amplitude

Keywords

High Energy Physics - Phenomenology, High Energy Physics - Experiment, Nuclear Experiment, Nuclear Theory

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/156960

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0803.1271
 http://arxiv.org/abs/0803.1271

Collections

arXiv