Physics
Scientific paper
Oct 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..haw.tb004i&link_type=abstract
American Physical Society, First Joint Meeting of the Nuclear Physicists of the American and Japanese Physical Societies October
Physics
Scientific paper
The introduction of a 2π exchange three-nucleon force (3NF) in nuclear Hamiltonian gives good agreement between experimental data and calculations of the triton binding energy and the minimum of the proton-deuteron (pd) elastic scattering cross section. However, the use of the same 3NF are unsatisfactory in explaining polarization phenomena such as the nucleon vector analyzing power and the deuteron tensor analyzing powers. This indicates that a comprehensive understanding of the role of nuclear interactions, particularly that of their spin dependence, in three-nucleon observables has not yet been obtained. We study the structure of the neutron-deuteron (nd) elastic amplitudes by decomposing them in spin space, and the 3NF effects to each component of the amplitudes with Faddeev calculations. We find that a set of polarization observables in nd (or pd) elastic scattering provides direct information of these components. This analysis explains the reason why a scaling behavior with the triton binding energy exists for observables such as the vector spin-correlation coefficient C_xx(θ).
Iseri Yasunori
Ishikawa Sumio
Tanifuji Makoto
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