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Measurement of Double-Polarization Asymmetries in the Quasielastic [3→ over He]([→ over e], e'd) Process

Author(s)
Jin, G.; Long, E.; Zhang, Y.-W.; Allada, Kalyan C.; Anderson, B.; Annand, J. R. M.; Averett, T.; Boeglin, W.; Bradshaw, P. C.; Camsonne, A.; Canan, M.; Cates, G. D.; Chen, C.; Chen, J. P.; Chudakov, E.; De Leo, R.; Deng, X.; Deltuva, A.; Deur, A.; Dutta, C.; El Fassi, L.; Flay, D.; Frullani, S.; Garibaldi, F.; Gao, H.; Gilman, R.; Glamazdin, O.; Golak, J.; Golge, S.; Gomez, J.; Hansen, O.; Higinbotham, D. W.; Holmstrom, T.; Huang, J.; Ibrahim, H. F.; de Jager, C. W.; Jensen, E.; Jiang, X.; Jones, M.; Kang, H.; Katich, J.; Khanal, H. P.; Kievsky, A.; King, P.; Korsch, W.; LeRose, J. J.; Lindgren, R.; Lu, H.-J.; Luo, W.; Marcucci, L. E.; Markowitz, P.; Meziane, M.; Michaels, R.; Moffit, Bryan J.; Monaghan, Peter; Nanda, S.; Norum, B. E.; Parno, D.; Piasetzky, E.; Posik, M.; Punjabi, V.; Puckett, A. J. R.; Qian, X.; Qiang, Y.; Qui, X.; Riordan, S.; Saha, A.; Sauer, P. U.; Sawatzky, B.; Schiavilla, R.; Schoenrock, B.; Shabestari, M.; Shahinyan, A.; Širca, S.; Skibiński, R.; St. John, J.; Subedi, R.; Sulkosky, V.; Tobias, W. A.; Tireman, W.; Urciuoli, G. M.; Viviani, M.; Wang, D.; Wang, K.; Wang, Y.; Watson, J.; Wojtsekhowski, B.; Witała, H.; Ye, Z.; Zhan, X.; Zhang, Y.; Zheng, X.; Zhao, B.; Zhu, L.; Gilad, Shalev; Mihovilovic, M.; Muangma, Navaphon; Pan, Kai, Ph. D. Massachusetts Institute of Technology; ... Show more Show less
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Abstract
We present a precise measurement of double-polarization asymmetries in the [3→ over He]([→ over e], e'd) reaction. This particular process is a uniquely sensitive probe of hadron dynamics in [superscript 3]He and the structure of the underlying electromagnetic currents. The measurements have been performed in and around quasielastic kinematics at Q[superscript 2] = 0.25(GeV/c)[superscript 2] for missing momenta up to 270  MeV/c. The asymmetries are in fair agreement with the state-of-the-art calculations in terms of their functional dependencies on p[subscript m] and ω, but are systematically offset. Beyond the region of the quasielastic peak, the discrepancies become even more pronounced. Thus, our measurements have been able to reveal deficiencies in the most sophisticated calculations of the three-body nuclear system, and indicate that further refinement in the treatment of their two-and/or three-body dynamics is required.
Date issued
2014-12
URI
http://hdl.handle.net/1721.1/92308
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Mihovilovic, M., G. Jin, E. Long, Y.-W. Zhang, K. Allada, B. Anderson, J. R. M. Annand, et al. “Measurement of Double-Polarization Asymmetries in the Quasielastic [3→ over He]([→ over e], e'd) Process.” Physical Review Letters 113, no. 23 (December 2014). © 2014 American Physical Society
Version: Final published version
ISSN
0031-9007
1079-7114

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