Measurement of the total compton scattering cross section between 6.5 and 11 GeV Article

Afzal, F, Akondi, CS, Albrecht, M et al. (2025). Measurement of the total compton scattering cross section between 6.5 and 11 GeV . PHYSICS LETTERS B, 870 10.1016/j.physletb.2025.139914

cited authors

  • Afzal, F; Akondi, CS; 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, VV; Black, T; Boeglin, W; Boer, M; Briscoe, WJ; Britton, T; Brunner, R; Cao, S; Chudakov, E; Chung, G; Cole, PL; Cortes, O; Crede, V; Dalton, MM; Darulis, D; Deur, A; Dobbs, S; Dolgolenko, A; Dugger, M; Dzhygadlo, R; Ebersole, D; Edo, M; Erbora, T; Eugenio, P; Fabrizi, A; Fanelli, C; Fang, S; Fritsch, M; Furletov, S; Gan, L; Gao, H; Gardner, A; Gasparian, A; Glazier, DI; Gleason, C; Goryachev, VS; Grube, B; Guo, J; Guo, L; Hernandez, J; Hernandez, K; Hoffman, ND; Hornidge, D; Huber, GM; Hurck, P; Imoehl, W; Ireland, DG; Ito, MM; Jaegle, I; Jarvis, NS; Jeske, T; Jing, M; Jones, RT; Kakoyan, V; Kalicy, G; Khachatryan, V; Kourkoumelis, C; Laduke, A; Larin, I; Lawrence, D; Lersch, DI; Li, H; Liu, B; Livingston, K; Lorenti, L; Lyubovitskij, V; Mahmood, A; Marukyan, H; Matveev, V; Mccaughan, M; Mccracken, M; Meyer, CA; Miskimen, R; Mitchell, RE; Mizutani, K; Moran, P; Neelamana, V; Ng, L; Nissen, E; Orešić, S; Ostrovidov, AI; Papandreou, Z; Paudel, C; Pedroni, R; Pentchev, L

authors

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.

publication date

  • November 1, 2025

published in

Digital Object Identifier (DOI)

volume

  • 870