Repulsive short range three-nucleon interaction
The three nucleon interaction (TNI) that arises from pion and the effective scalar and vector meson exchange components of the nucleon-nucleon interaction is constructed. The dominant terms of this TNI involve an intermediate nucleon-antinucleon pair and can be thought of as a {pi} - {open_quotes}{sigma}{close_quotes} exchange and a {pi} - {open_quotes}{omega}{close_quotes} exchange TNI. Using several wavefunction models they show that this interaction reduces the calculated binding energy of the trinucleon in perturbation theory. Their most consistent combination of this short range TNI and a triton wavefunction both derived from the Bonn OBEPQ reduces the triton binding energy by about 200 KeV (roughly a factor of 4 smaller than that of the Tucson-Melbourne {pi} - {rho} TNI with the OBEPQ wavefunction). These results are qualitatively unchanged by the corresponding TNIs that arise from the excitation of N(1440) resonances on the intermediate nucleon. The totality of these TNIs provide an amount of additional repulsion that approximately corresponds to that of the repulsive spin-independent phenomenological TNI of short range postulated in some studies of light nuclei.
- OSTI ID:
- 375038
- Report Number(s):
- CONF-9304297-; ISSN 0003-0503; TRN: 96:004080-0430
- Journal Information:
- Bulletin of the American Physical Society, Vol. 40, Issue 2; Conference: 1993 joint meeting of the American Physical Society and the American Association of Physics Teachers, Washington, DC (United States), 12-15 Apr 1993; Other Information: PBD: Apr 1995
- Country of Publication:
- United States
- Language:
- English
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