Document Type

Article

Publication Date

2023

DOI

10.1103/PhysRevLett.130.211902

Publication Title

Physical Review Letters

Volume

130

Issue

21

Pages

211902 (1-7)

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 Q2 and Bjorken-x 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.

Rights

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) license. Further distribution of this work must maintain attribution to the authors and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Original Publication Citation

Christiaens, G., Defurne, M., Sokhan, D., Achenbach, P., Akbar, Z., Amaryan, M. J., Atac, H., Avakian, H., Gayoso, C. A., Baashen, L., Baltzell, N. A., Barion, L., Bashkanov, M., Battaglieri, M., Bedlinskiy, I., Benkel, B., Benmokhtar, F., Bianconi, A., Biselli, A. S., . . . Zurek, M. (2023). First CLAS12 measurement of deeply virtual Compton scattering beam-spin asymmetries in the extended valence region. Physical Review Letters, 130(21), 1-7, Article 211902. https://doi.org/10.1103/PhysRevLett.130.211902

ORCID

0000-0002-4136-2572 (Bulumulla), 0000-0003-2243-6836 (Kuhn)

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