Effects of a chiral three-nucleon force on nucleus-nucleus scattering

Abstract

We investigate the effects of chiral NNLO three-nucleon force (3NF) on nucleus-nucleus elastic scattering, using a standard prescription based on the Brueckner-Hartree-Fock method and the g-matrix folding model. The g-matrix calculated in nuclear matter from the chiral N3LO two-nucleon forces (2NF) is close to that from the Bonn-B 2NF. Because the Melbourne group have already developed a practical g-matrix interaction by localizing the nonlocal g-matrix calculated from the Bonn-B 2NF, we consider the effects of chiral 3NF, in this first attempt to study the 3NF effects, by modifying the local Melbourne g-matrix according to the difference between the g-matrices of the chiral 2NF and 2NF+3NF. For nucleus-nucleus elastic scattering, the 3NF corrections make the folding potential less attractive and more absorptive. The latter novel effect is due to the enhanced tensor correlations in triplet channels. These changes reduce the differential cross section at the middle and large angles, improving the agreement with the experimental data for 16O-16O scattering at 70 MeV/nucleon and 12C-12C scattering at 85 MeV/nucleon.

arXiv comment5 pages, 3 figures

References in corpus (25)

• An accurate nucleon-nucleon potential with charge-independence breaking
• Modern Theory of Nuclear Forces
• Chiral effective field theory and nuclear forces
• Quantum Monte Carlo calculations of nuclei with A \leq 7
• The two-nucleon system at next-to-next-to-next-to-leading order
• Three-Nucleon Forces from Chiral Effective Field Theory
• Improved nuclear matter calculations from chiral low-momentum interactions
• Structure of A=10-13 nuclei with two- plus three-nucleon interactions from chiral effective field theory
• Evolution of Nuclear Spectra with Nuclear Forces
• Is nuclear matter perturbative with low-momentum interactions?
• Extended-soft-core Baryon-Baryon Model II. Hyperon-Nucleon Interaction
• Two-Body Correlations in Nuclear Systems
• Density-dependent effective nucleon-nucleon interaction from chiral three-nucleon forces
• Spectra and binding energy predictions of chiral interactions for 7Li
• Symmetric nuclear matter with chiral three-nucleon forces in the self-consistent Green's functions approach
• Saturation of nuclear matter and short-range correlations
• Extended-soft-core Baryon-Baryon Model I. Nucleon-Nucleon Scattering (ESC04) Extended-soft-core Baryon-Baryon Model I. Nucleon-Nucleon Scattering (ESC04)
• The Brieva-Rook Localization of the Microscopic Nucleon-Nucleus Potential
• Nuclear and neutron matter $G$-matrix calculations with Ch-EFT potential including effects of three-nucleon interaction
• Dirac-Brueckner-Hartree-Fock versus chiral effective field theory
• Mass-number and isotope dependence of the local microscopic optical potential for polarized proton scattering
• Microscopic optical potential from chiral nuclear forces
• The triton with long-range chiral N3LO three nucleon forces
• Strength of reduced two-body spin-orbit interaction from chiral three-nucleon force
• Channel coupling effect and important role of imaginary part of coupling potential for high-energy heavy-ion scatterings

Cited by in corpus (10)

• Nuclear mean field and double-folding model of the nucleus-nucleus optical potential
• Novel applications of the dispersive optical model
• Microscopic calculations based on chiral two- and three-nucleon forces for proton- and ${}^4$He-nucleus scattering
• Theoretical Optical Potential Derived From Nucleon-Nucleon Chiral Potentials
• Roles of chiral three-nucleon forces in nucleon-nucleus scattering
• Microscopic coupled-channel calculations of nucleus-nucleus scattering including chiral three-nucleon-force effects
• Nuclear saturation in lowest-order Brueckner theory with two- and three-nucleon forces in view of chiral effective field theory
• Folding model analysis of ${}^{12}C{-}^{12}C$ and ${}^{16}O{-}^{16}O$ elastic scattering using the density-dependent LOCV averaged effective interaction
• Study of ($p,n$)IAS and (${}^3$He,$t$)IAS charge-exchange reactions with the $G$-matrix folding method
• Probing three-nucleon-force effects via (p,2p) reactions