Testing nuclear forces by polarization transfer coefficients ind(p→,p→)d

Abstract

The proton to proton polarization transfer coefficients K x ′ x , K y ′ y , K x ′ z and the proton to deuteron polarization transfer coefficientsMeV, respectively. The data have been compared to predictions of modern nuclear forces obtained by solving the three-nucleon Faddeev equations in momentum space. Realistic (semi) phenomenological nucleon-nucleon potentials combined with model three-nucleon forces and modern chiral nuclear forces have been used. The AV18, CD Bonn, Nijm I and II nucleon-nucleon interactions have been applied alone or combined with the Tucson-Melbourne 99 three-nucleon force, adjusted separately for each potential to reproduce the triton binding energy. For the AV18 potential also the Urbana IX three-nucleon force have been used. In addition chiral NN potentials in the next-to-leading-order and chiral two-and three-nucleon forces in the next-to-next-to-leading-order have been applied. Only when three-nucleon forces are included a satisfactory description of all data results. For the chiral approach the restriction to the forces in the next-to-leading order is insufficient. Only when going over to the next-to-next-to-leading order one gets a satisfactory description of the data, similar to the one obtained with the (semi) phenomenological forces. 21.45.+v, 24.70.+s, 25.10.+s, 25.40.Lw

Chiral effective field theory and nuclear forces

“…observables are predictions. The 3NF at NNLO has been applied in calculations of few-nucleon reactions [71,[89][90][91][92][93][94][95][96][97], structure of light-and medium-mass nuclei [98][99][100][101], and nuclear and neutron matter [102,103] with a good deal of success. Yet, the famous 'A y puzzle' of nucleon-deuteron scattering is not resolved [71,94].…”

Deuteron breakuppd→{pp}snwith forward emission of a fastDymov1, Komarov2, Macharashvili3 et al. 2010Phys. Rev. C140110View full textAdd to dashboardCite

“…The (1232) still dominates at these energies. This mechanism realizes the contribution of a special type of three-body force, whose relative contribution at lower energies is much smaller and rather uncertain [20,86]. One may conclude that the pd → {pp} s n reaction at 0.5-1.0 GeV offers a new tool for the study of this type of three-body force, as discussed in Ref.…”

Nuclear forces from chiral effective field theory

“…The 3NF at NNLO is known [39,40] and has been applied in few-nucleon reactions [40,80,81] as well as the structure of light nuclei [64,63,65]. However, the famous 'A y puzzle' of nucleon-deuteron scattering is not resolved by the 3NF at NNLO.…”