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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

Producción científica: Articlerevisión exhaustiva

8 Citas (Scopus)

Resumen

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.

Idioma originalEnglish
Número de artículo232505
PublicaciónPhysical Review Letters
Volumen113
N.º23
DOI
EstadoPublished - dic 5 2014

Nota bibliográfica

Publisher Copyright:
© 2014 American Physical Society.

Financiación

FinanciadoresNúmero del financiador
NASA Johnson Space Center
Office of Science Programs
U.S. Department of Energy EPSCoR
National Science Foundation Arctic Social Science Program1306126
National Science Foundation Arctic Social Science Program
Science and Technology Facilities CouncilST/J000175/1
Science and Technology Facilities Council

    ASJC Scopus subject areas

    • General Physics and Astronomy

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