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Measurement of double-polarization asymmetries in the quasielastic he → 3 (e →,e′d) process

  • M. Mihovilovič
  • , G. Jin
  • , E. Long
  • , Y. W. Zhang
  • , K. Allada
  • , B. Anderson
  • , J. R.M. Annand
  • , T. Averett
  • , W. Boeglin
  • , P. Bradshaw
  • , A. Camsonne
  • , M. Canan
  • , G. D. Cates
  • , C. Chen
  • , J. P. Chen
  • , E. Chudakov
  • , R. De Leo
  • , X. Deng
  • , A. Deltuva
  • , A. Deur
  • C. Dutta, L. El Fassi, D. Flay, S. Frullani, F. Garibaldi, H. Gao, S. Gilad, R. Gilman, O. Glamazdin, J. Golak, S. Golge, J. Gomez, O. Hansen, D. W. Higinbotham, T. Holmstrom, J. Huang, H. Ibrahim, C. W. De Jager, E. Jensen, X. Jiang, M. Jones, H. Kang, J. Katich, H. P. Khanal, A. Kievsky, P. King, W. Korsch, J. Lerose, R. Lindgren, H. J. Lu, W. Luo, L. E. Marcucci, P. Markowitz, M. Meziane, R. Michaels, B. Moffit, P. Monaghan, N. Muangma, S. Nanda, B. E. Norum, K. Pan, D. Parno, E. Piasetzky, M. Posik, V. Punjabi, A. J.R. Puckett, X. Qian, Y. Qiang, X. Qui, S. Riordan, A. Saha, P. U. Sauer, B. Sawatzky, R. Schiavilla, B. Schoenrock, M. Shabestari, A. Shahinyan, S. Širca, R. Skibiński, J. St John, R. Subedi, V. Sulkosky, W. A. Tobias, W. Tireman, G. M. Urciuoli, M. Viviani, D. Wang, K. Wang, Y. Wang, J. Watson, B. Wojtsekhowski, H. Witała, Z. Ye, X. Zhan, Y. Zhang, X. Zheng, B. Zhao, L. Zhu
  • Jožef Stefan Institute
  • University of Virginia
  • Kent State University
  • Rutgers - The State University of New Jersey, New Brunswick
  • Thomas Jefferson National Accelerator Facility
  • University of Glasgow
  • College of William and Mary
  • Florida International University
  • Old Dominion University
  • Hampton University
  • University of Bari
  • University of Lisbon
  • Vilnius University
  • University of Kentucky
  • Temple University
  • National Institute for Nuclear Physics
  • Duke University
  • Massachusetts Institute of Technology
  • NASU - Kharkov Institute of Physics and Technology
  • Jagiellonian University in Kraków
  • Longwood University
  • Cairo University
  • Christopher Newport University
  • Los Alamos National Laboratory
  • Seoul National University
  • Ohio University
  • Huangshan University
  • Lanzhou University
  • University of Pisa
  • Carnegie Mellon University
  • Tel Aviv University
  • Norfolk State University
  • Leibniz University Hannover
  • Northern Michigan University
  • A. Alikhanian Yerevan Institute of Physics
  • University of Ljubljana
  • George Washington University
  • University of Illinois at Urbana-Champaign

科研成果: 期刊稿件文章同行评审

摘要

We present a precise measurement of double-polarization asymmetries in the He→3(e→,e′d) reaction. This particular process is a uniquely sensitive probe of hadron dynamics in He3 and the structure of the underlying electromagnetic currents. The measurements have been performed in and around quasielastic kinematics at Q2=0.25(GeV/c)2 for missing momenta up to 270MeV/c. The asymmetries are in fair agreement with the state-of-the-art calculations in terms of their functional dependencies on pm 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.

源语言英语
文章编号232505
期刊Physical Review Letters
113
23
DOI
出版状态已出版 - 5 12月 2014
已对外发布

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