Eur. Phys. J. A (2006) 29: 141-146
https://doi.org/10.1140/epja/i2006-10069-9

Nuclear Structure and Reactions

The elastic pd scattering analyzing powers and spin correlation coefficients at E^lab _p = 135 and 200 MeV: Three-nucleon force and relativistic effects

¹ M. Smoluchowski Institute of Physics, Jagiellonian University, PL-30059, Kraków, Poland
² Institut für Theoretische Physik II, Ruhr-Universität Bochum, 44780, Bochum, Germany
³ Institut für Kernphysik, Forschungszentrum Jülich, D-52425, Jülich, Germany
⁴ Department of Physics, Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensuicho, 804-8550, Tobata, Kitakyushu, Japan

Received: 25 May 2006
Accepted: 8 July 2006
Published online: 28 July 2006

Abstract

The rich set of data for analyzing powers and spin correlation coefficients in pd elastic scattering at E ^lab _p = 135 and 200 MeV taken at IUCF has been compared to theoretical predictions based on modern nuclear forces. To this aim the three-nucleon Faddeev equations have been solved with standard nucleon-nucleon potentials (AV18, CD Bonn, NijmI and II) alone or combined with the 2π-exchange Tucson-Melbourne three-nucleon force. For the AV18 potential also the Urbana IX three-nucleon interaction has been used. For some spin observables the addition of these three-nucleon forces improves the description of data whereas in other cases the description deteriorates. The relativistic effects for all studied spin observables have been investigated and found to be small. The conclusion is that significant parts of the three-nucleon force are missing.