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Precision measurement of vector and tensor analyzing powers in elastic deuteron-proton scattering

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. Witala·K. Yako
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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 (3NF). Angular distribution in the range of 70-120 degree in the center-of mass frame for incident-deuteron energies of 130 and 180 MeV were obtained using the RIKEN facility. The beam polarization was unambiguously determined by measuring the 12C(d,alpha)10B(2+) reaction at 0 degree. 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.

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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. Witala, K. Yako. 2007-02-20. Precision measurement of vector and tensor analyzing powers in elastic deuteron-proton scattering. https://doi.org/10.1140/epja%2Fi2006-10228-0

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