pd scattering at 250 MeV and three-nucleon forces
Research Center for Nuclear Physics, Osaka University, 567-0047, Ibaraki, Osaka, Japan
2 Department of Physics, University of Tokyo, 113-0033, Bunkyo, Tokyo, Japan
3 Department of Physics, Kyushu University, 812-8581, Hakozaki, Fukuoka, Japan
4 Joint Institute for Nuclear Researches, 141980, Dubna, Russia
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We have measured angular distributions of the differential cross-section, the analyzingpower and all of the spin transfer coefficients K y y’, K x x’, K z x’, K x z’, and K z z’ for the pd elastic scattering at 250 MeV. These are the first measurements of a complete set of proton polarization observables for pd elastic scattering at intermediate energies. The present data are compared with theoretical predictions based on exact solutions of the three-nucleon Faddeev equations and modern realistic nucleon-nucleon potentials combined with three-nucleon forces (3NF), namely the Tucson-Melbourne (TM) 2-exchange model, a modification thereof (TM’) closer to chiral symmetry, and the Urbana IX model.
© Società Italiana di Fisica and Springer-Verlag, 2003