Deeply Virtual Compton Scattering Cross Section at High Bjorken xB
DOI
10.1103/PhysRevLett.128.252002
Document Type
Journal Article
Publication Date
6-24-2022
Publication Title
Physical Review Letters
Volume
128
Issue
25
ISSN
319007
Abstract
We report high-precision measurements of the deeply virtual Compton scattering (DVCS) cross section at high values of the Bjorken variable xB. DVCS is sensitive to the generalized parton distributions of the nucleon, which provide a three-dimensional description of its internal constituents. Using the exact analytic expression of the DVCS cross section for all possible polarization states of the initial and final electron and nucleon, and final state photon, we present the first experimental extraction of all four helicity-conserving Compton form factors (CFFs) of the nucleon as a function of xB, while systematically including helicity flip amplitudes. In particular, the high accuracy of the present data demonstrates sensitivity to some very poorly known CFFs.
Open Access
Hybrid_Gold
Repository Citation
Georges, F., Rashad, M., Stefanko, A., Dlamini, M., Karki, B., Ali, S., Lin, P., Ko, H., Israel, N., Adikaram, D., Ahmed, Z., Albataineh, H., Aljawrneh, B., Allada, K., Allison, S., Alsalmi, S., Androic, D., Aniol, K., Annand, J., Atac, H., Averett, T., Ayerbe Gayoso, C., Bai, X., Bane, J., Barcus, S., Bartlett, K., Bellini, V., Beminiwattha, R., Bericic, J., Biswas, D., & Brash, E. (2022). Deeply Virtual Compton Scattering Cross Section at High Bjorken xB. Physical Review Letters, 128 (25). https://doi.org/10.1103/PhysRevLett.128.252002