Abstract
We investigated three-nucleon (3N) force effects in the final state interaction (FSI) configuration of the d (n,nn) pd(n,nn)p breakup reaction at the incoming nucleon energy E_nEn= 200 MeV. Although 3N force effects for the elastic nucleon-deuteron scattering cross section at comparable energies are located predominantly in the region of intermediate and backward angles, the corresponding 3N force effects for the integrated FSI configuration breakup cross section are found also at forward scattering angles.
Highlights
Our studies of 3N continuum are based on the exact solutions of the 3N Faddeev equation in momentum space
The situation changed at highier energies, where theoretical predictions using only 2N forces clearly deviated from the data [6, 7]
For energies smaller than approximately 140 MeV the agreement between theoretical predictions and the data for this observable was regained, when the Tucson–Melbourne (TM) [8] or Urbana IX [9] 3N force (3NF) models were included in the 3N Hamiltonian [10]
Summary
Our studies of 3N continuum are based on the exact solutions of the 3N Faddeev equation in momentum space They began in the 1980s and in the 1990s were performed with several realistic two-nucleon (2N) forces: the AV18 [1], CD Bonn [2], NijmI, NijmII, Nijm and Reid93 [3] potentials. This chiral symmetry is explicitly broken because of the quark mass terms This feature of QCD and the mechanism of spontaneous chiral symmetry breaking inspired Weinberg to use effective field theory of QCD in the form of chiral perturbation theory as a tool to construct nuclear interactions. Our purpose was to estimate 3NF effects for this effectively two-body reaction
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