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

Journal Article · Fri Sep 15 04:00:00 EDT 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.74.034003· OSTI ID:20863771

Barnea, Nir; Leidemann, Winfried; Orlandini, Giuseppina ^[1]

---

1. Racah Institute of Physics, Hebrew University, 91904 Jerusalem (Israel)

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 {sup 2}H, {sup 3}H, and {sup 3,4}He. 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 nonlocal 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. Although 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, because the one pion exchange is not manifestly implemented there.

• OSTI ID: 20863771
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 74; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCURACY
CROSS SECTIONS
DEUTERIUM
FOUR-BODY PROBLEM
HARMONICS
HELIUM 4
INTEGRAL TRANSFORMATIONS
INVERSE SCATTERING PROBLEM
NONLOCAL POTENTIAL
NUCLEAR FORCES
NUCLEON-NUCLEON POTENTIAL
NUCLEONS
PIONS
RESONANCE
TRITIUM