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Title Form factors and two-photon exchange in high-energy elastic electron-proton scattering
Authors Bogdan Wojtsekhowski, M. Christy, T. Gautam, L. Ou, B. Schmookler, Y. Wang, Dasuni Adikaram, Zafir Ahmed, H. Albataineh, S. Ali, B. Aljawrneh, K. Allada, S.L. Allison, S. Alsalmi, D. Androic, K. Aniol, J. Annand, J. Arrington, H. Atac, T. Averett, C. Ayerbe Gayoso, X. Bai, J. Bane, S. Barcus, K. Bartlett, V. Bellini, R. Beminiwattha, J. Bericic, H. Bhatt, D. Bhetuwal, D. Biswas, E. Brash, D. Bulumulla, C. Camacho, J. Campbell, A. Camsonne, M. Carmignotto, J. Castellanos, C. Chen, J. Chen, T. Chetry, E. Cisbani, B. Clary, E. Cohen, N. Compton, J. Cornejo, S. Covrig Dusa, B. Crowe, S. Danagoulian, T. Danley, W. Deconinck, M. Defurne, C. Desnault, D. Di, M. Dlamini, M. Duer, B. Duran, R. Ent, C. Fanelli, E. Fuchey, C. Gal, D. Gaskell, F. Georges, S. Gilad, O. Glamazdin, K. Gnanvo, A. Gramolin, V. Gray, C. Gu, A. Habarakada, T. Hague, G. Hamad, D. Hamilton, K. Hamilton, O. Hansen, F. Hauenstein, A. Hernandez, W. Henry, D. Higinbotham, T. Holmstrom, T. Horn, Y. Huang, G. Huber, C. Hyde, H. Ibrahim, N. Israel, C.-M. Jen, K. Jin, M. Jones, A. Kabir, B. Karki, C. Keppel, V. Khachatryan, P. King, S. Li, W. Li, H. Liu, J. Liu, A. Liyanage, D. Mack, J. Magee, S. Malace, J. Mammei, P. Markowitz, S. Mayilyan, E. McClellan, F. Meddi, D. Meekins, K. Mesick, R. Michaels, A. Mkrtchyan, B. Moffit, R. Montgomery, L. Myers, P. Nadel-Turonski, S. Nazeer, V. Nelyubin, D. Nguyen, N. Nuruzzaman, M. Nycz, R. Obrecht, K. Ohanyan, C. Palatchi, B. Pandey, K. Park, S. Park, C. Peng, F. Persio, R. Pomatsalyuk, E. Pooser, A. Puckett, V. Punjabi, B. Quinn, S. Rahman, M. Rashad, S. Riordan, J. Roche, I. Sapkota, A. Sarty, B. Sawatzky, N. Saylor, M. Shabestari, A. Shahinyan, S. Sirca, G. Smith, S. Sooriyaarachchilage, N. Sparveris, R. Spies, A. Stefanko, T. Su, A. Subedi, V. Sulkosky, A. Sun, Y. Tan, L. Thorne, N. Ton, F. Tortorici, R. Trotta, R. Uniyal, G. Urciuoli, E. Voutier, B. Waidyawansa, S. Wood, X. Yan, L. Ye, Z. Ye, C. Yero, J. Zhang, Y. Zhao, P. Zhu
JLAB number JLAB-PHY-21-3336
LANL number arXiv:2103.01842
Other number DOE/OR/23177-5152
Document Type(s) (Journal Article) 
Associated with EIC: No
Supported by Jefferson Lab LDRD Funding: No
Funding Source: Nuclear Physics (NP)
Other Funding:UK Science and Technol- ogy Facilities Council
U.S. National Science Foundation
Natural Sciences and Engineering Research Council
 

Journal
Compiled for Physical Review Letters
Volume 128
Page(s) 102002
Refereed
Publication Abstract: We report new precision measurements of the elastic electron-proton scattering cross section for momentum transfer squared (Q$^2$) up to 15.75~GeV$^2$ These data allow for improved extraction of the proton magnetic form factor at high Q$^2$ and nearly double the Q$^2$ range of direct longitudinal/transverse separated cross sections. A comparison of our results to polarization measurements establishes the presence of hard two-photon exchange in the $e$-$p$ elastic scattering cross section at greater than 95\% confidence level for Q$^2$ up to 8 (GeV/c)$^2$.
Experiment Numbers: E12-07-108
Group: Hall A
Document: pdf
DOI: https://doi.org/10.1103/PhysRevLett.128.102002
Accepted Manuscript: 2103.01842.pdf
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Supporting Datasets: