Authors

Document Type

Article

Publication Date

2025

DOI

10.1016/j.physletb.2025.139914

Publication Title

Physics Letters B

Volume

870

Pages

139914

Abstract

The total cross section for Compton scattering off atomic electrons, γ + e→γ′+e′, was measured using photons with energies between 6.5 and 11.1 GeV incident on a ⁹Be target as part of the PrimEx-eta experiment in Hall D at Jefferson Lab. This is the first measurement of this fundamental QED process within this energy range. The total uncertainties of the cross section, combining the statistical and systematic components in quadrature, averaged to 3.4 % across all energy bins. This not only demonstrates the capability of this experimental setup to perform precision cross-section measurements at forward angles but also allows us to compare with state-of-the-art QED calculations.

Rights

© 2025 The Authors

This is an open access article under the Creative Commons Attribution 4.0 International (CC BY 4.0) License.

Data Availability

Article states: "The data is available on HEPdata [19]"

Original Publication Citation

Afzal, F., Akondi, C. S., Albrecht, M., Amaryan, M., Arrigo, S., Arroyave, V., Asaturyan, A., Austregesilo, A., Baldwin, Z., Barbosa, F., Barlow, J., Barriga, E., Barsotti, R., Barton, D., Baturin, V., Berdnikov, V. V., Black, T., Boeglin, W., Boer, M., & Zhilmann, B. (2025). Measurement of the total Compton scattering cross section between 6.5 and 11 GeV. Physics Letters B, 870, 1-7, Article 139914. https://doi.org/10.1016/j.physletb.2025.139914

ORCID

0000-0002-5648-0256 (Amaryan)

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