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Precision measurement of vector and tensor analyzing powers in elastic deuteron-proton scattering |
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| Authors: | H. Mardanpour H. R. Amir-Ahmadi A. Deltuva K. Itoh N. Kalantar-Nayestanaki T. Kawabata H. Kuboki Y. Maeda J. G. Messchendorp S. Sakaguchi H. Sakai N. Sakamoto Y. Sasamoto M. Sasano K. Sekiguchi K. Suda Y. Takahashi T. Uesaka H. Witała K. Yako |
| Affiliation: | (1) Kernfysisch Versneller Instituut (KVI), University of Groningen, Zernikelaan 25, 9747 AA Groningen, The Netherlands;(2) Centro de Fisica Nuclear da Universidade de Lisboa, P-1649-003 Lisboa, Portugal;(3) Department of Physics, Saitama University, 338-8570 Saitama, Japan;(4) Center for Nuclear Study, University of Tokyo, Tokyo, Japan;(5) Department of Physics, University of Tokyo, Tokyo, Japan;(6) Nishina Center, RIKEN, Tokyo, Japan;(7) M. Smoluchowski Institute of Physics, Jagiellonian University, Kraków, Poland |
| Abstract: | High-precision vector and tensor analyzing powers of elastic deuteron-proton ( d + p) scattering have been measured at intermediate energies to investigate effects of three-nucleon forces. Angular distributions in the range of 70°-120° in the center-of mass frame for incident-deuteron energies E d lab = 130 and 180 MeV were obtained using the RIKEN facility. The beam polarization was unambiguously determined by measuring the ^12C (d, α)^10B(2+) reaction at 0°. Results of the measurements are compared with state-of-the-art three-nucleon calculations. The present modeling of nucleon-nucleon forces and its extension to the three-nucleon system is not sufficient to describe the high-precision data consistently and requires, therefore, further investigation. |
| Keywords: | 21.30.-x Nuclear forces 21.45.+v Few-body systems 24.70.+s Polarization phenomena in reactions 25.45.De Elastic and inelastic scattering |
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