The new high-precision chaarge-dependent Bonn NN potential (CD-Bonn) and triton binding

Journal Article · Sun Oct 01 04:00:00 EDT 1995 · Bulletin of the American Physical Society

OSTI ID:255510

Machleidt, R; Sammarruca, F; Song, Y

A new, high-precision, charge-dependent Bonn nucleon-nucleon potential ({open_quote}CD-BONN{close_quote}) has been constructed that is exactly phase-equivalent to the Nijmegen phase shift analysis and the new high-quality Nijmegen potentials. This non-local CD- Bonn potential predicts 8.0 MeV binding energy for the triton (in a charge-dependent 34-channel Faddeev calculation) which is about 0.4 MeV more than the predictions by the local (phase-equivalent) Nijmegen potential (Nijm-II). We pin down origin and size of the nonlocality in the Bonn potential, in analytic and numeric form. The nonlocality is due to the use of the correct off-shell Feynman amplitude of one-boson-exchange avoiding the commonly used onshell approximations which yeild the loal potentials. Adding the relativistic effects from the realtivistic nucleon propagators in the Faddeev equations, bring the CD-Bonn result up to 8.2 MeV triton binding. This leaves a difference of only about 0.3 MeV to experiment, which may ossibly be explained by refinements in the treatment of relativity and the inclusion of other nonloclities (e.g., those due to the composite nature of hadrons).

• OSTI ID: 255510
• Report Number(s): CONF-9510116--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 10 Vol. 40; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BINDING ENERGY
FADDEEV EQUATIONS
NUCLEON-NUCLEON POTENTIAL
PHASE SHIFT
TRITONS