Document Type
Article
Publication Date
2023
DOI
10.1016/j.physletb.2023.137761
Publication Title
Physics Letters B
Volume
839
Pages
137761 (1-7)
Abstract
A multidimensional extraction of the structure function ratio from the hard exclusive →ep → e'n��+ reaction above the resonance region has been performed. The study was done based on beam-spin asymmetry measurements using a 10.6 GeV incident electron beam on a liquid-hydrogen target and the CLAS12 spectrometer at Jefferson Lab. The measurements focus on the very forward regime (t/Q2≪ 1) with a wide kinematic range of in the valence regime (0.17 < ��B < 0.55), and virtualities ranging from 1.5 GeV2 up to 6 GeV2. The results and their comparison to theoretical models based on Generalized Parton Distributions demonstrate the sensitivity to chiral-odd GPDs and the directly related tensor charge of the nucleon. In addition, the data is compared to an extension of a Regge formalism at high photon virtualities. It was found that the Regge model provides a better description at low Q2, while the GPD model is more appropriate at high Q2.
Rights
© 2023 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: "Data will be made available on request."
Original Publication Citation
Diehl, S., Kim, A., Joo, K., Achenbach, P., Akbar, Z., Amaryan, M.J., Atac, H., Avagyan, H., Ayerbe Gayoso, C., Baashen, L., Barion, L., Bashkanov, M., Battaglieri, M., Bedlinskiy, I., Benkel, B., Benmokhtar, F., Bianconi, A., Biselli, A.S., Bondi, M., ... Zurek, M. (2023). A multidimensional study of the structure function ratio σLT'/ σ₀ from hard exclusive ��⁺ electro-production off protons in the GPD regime. Physics Letters B, 839, 1-7, Article 137761. https://doi.org/10.1016/j.physletb.2023.137761
ORCID
0000-0002-4136-2572 (Bulumulla), 0000-0003-2086-2807 (Hattawy), 0000-0002-3598-4594 (Pandey),
Repository Citation
Diehl, S.; Kim, A.; Joo, K.; Achenbach, P.; Akbar, Z.; Amaryan, M. J.; Atac, H.; Avagyan, H.; Ayerbe Gayoso, C.; Baashen, L.; Barion, L.; Bashkanov, M.; Battaglieri, M.; Bedlinsky, I.; Benkel, B.; Benmokhtar, F.; Bianconi, A.; Biselli, A. S.; Bondi, M.; Booth, W.A.; Zurek, M.; and et al., "A Multidimensional Study of the Structure Function Ratio σLT'/ σ₀ From Hard Exclusive ��⁺ Electro-Production Off Protons in the GPD Regime" (2023). Physics Faculty Publications. 756.
https://digitalcommons.odu.edu/physics_fac_pubs/756
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