Test of J-matrix inverse scattering potentials on electromagnetic reactions of few-nucleon systems

Abstract

The J-matrix inverse scattering nucleon-nucleon potentials (JISP), describing both two-nucleon data and bound and resonant states of light nuclei to high accuracy, are tested on the total photoabsorption cross sections of Deuteron, Triton, 3He and 4He. The calculations in the three- and four-body systems are carried out via the Lorentz integral transform method and the hyperspherical harmonics (HH) technique. To this end the HH formalism has been adapted to accommodate non-local potentials. The cross sections calculated with the JISP are compared to those obtained with more traditional realistic interactions, which include two- and three-nucleon forces. While the results of the two kinds of potential models do not differ significantly at lower energies, beyond the resonance peak they show fairly large discrepancies, which increase with the nuclear mass. We argue that these discrepancies may be due to a probably incorrect long range behavior of the JISP, since the one pion exchange is not manifestly implemented there.

arXiv comment18 pages, 4 figures, 1 table

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Cited by in corpus (11)

• The Lorentz Integral Transform (LIT) method and its applications to perturbation induced reactions
• Matter and charge radius of 6He in the hyperspherical-harmonics approach
• Helium halo nuclei from low-momentum interactions
• 6He beta-decay rate and the suppression of the axial constant in nuclear matter
• Photodisintegration of light nuclei for testing a correlated realistic interaction in the continuum
• Case study: calculation of a narrow resonance with the LIT method
• Long Range Tensor Correlations in Charge and Parity Projected Fermionic Molecular Dynamics
• The Lorentz integral transform (LIT) method
• Electromagnetic reactions of few-body systems with the Lorentz integral transform method
• Deuteron-equivalent and phase-equivalent interactions within light nuclei
• Electromagnetic Excitations and Responses in Nuclei from First Principles