First CLAS12 Measurement of Deeply Virtual Compton Scattering Beam-Spin Asymmetries in the Extended Valence Region
DOI
10.1103/PhysRevLett.130.211902
Abstract
Deeply virtual Compton scattering (DVCS) allows one to probe generalized parton distributions describing the 3D structure of the nucleon. We report the first measurement of the DVCS beam-spin asymmetry using the CLAS12 spectrometer with a 10.2 and 10.6 GeV electron beam scattering from unpolarized protons. The results greatly extend the π2 and Bjorken-π₯ phase space beyond the existing data in the valence region and provide 1600 new data points measured with unprecedented statistical uncertainty, setting new, tight constraints for future phenomenological studies.
Document Type
Article
Publication Date
5-25-2023
Publisher Statement
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published articleβs title, journal citation, and DOI. Funded by SCOAP3.
Recommended Citation
Christiaens, G., others (2023). First CLAS12 measurement of deeply virtual compton scattering beam-spin asymmetries in the extended valence region. Phys. Rev. Lett., 130, article 211902. DOI: https://doi.org/10.1103/PhysRevLett.130.211902