Document Type


Publication Date




Publication Title

Nature Communications




1408 (7 pp.)


The internal structure of nucleons (protons and neutrons) remains one of the greatest outstanding problems in modern nuclear physics. By scattering high-energy electrons off a proton we are able to resolve its fundamental constituents and probe their momenta and positions. Here we investigate the dynamics of quarks and gluons inside nucleons using deeply virtual Compton scattering (DVCS)-a highly virtual photon scatters off the proton, which subsequently radiates a photon. DVCS interferes with the Bethe-Heitler (BH) process, where the photon is emitted by the electron rather than the proton. We report herein the full determination of the BH-DVCS interference by exploiting the distinct energy dependences of the DVCS and BH amplitudes. In the regime where the scattering is expected to occur off a single quark, measurements show an intriguing sensitivity to gluons, the carriers of the strong interaction.


Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Original Publication Citation

Defurne, M., Jimenez-Arguello, A. M., Ahmed, Z., Albataineh, H., Allada, K., Aniol, K. A., . . . Zhu, P. (2017). A glimpse of gluons through deeply virtual compton scattering on the proton. Nature Communications, 8, 1408. doi:10.1038/s41467-017-01819-3


0000-0001-7282-8120 (Hyde)