Nucleon-Nucleon Spin-Orbit Interaction and the Repulsive Core

Journal Article · Sat Oct 01 04:00:00 EDT 1960 · Physical Review

DOI:https://doi.org/10.1103/PhysRev.120.287· OSTI ID:4122623

Breit, G. ^[1]

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1. Yale Univ., New Haven, CT (United States)

Recent proposals to explain the phenomenological repulsive core and spin- orbit interaction in nucleon-nucleon scatterirg in terms of a vector meson field are discussed. Estimates of the mass of the vector meson made on the basis of the Bryan potential may need some revision on account of insufficiently studied possibilities of modifying that potential. Estimates of interaction constants on the basis of the Signell-Zinn-Marshak potential and the replacement of a two-body relativistic problem by a onebody problem do not appear applicable. Estimates based on a covariant matrix element but neglecting wave function distortion in the analysis of 300-Mev data are shown to be quite unceriain. Accordingly the evidence for a vector meson mass of 3m pi or 4m pi also appears to have little weight. Masses 3m pi and 4m pi are shown to lead to centralfield potential energy tails which extend into the one-pionexchange potential region and appear therefore to be improbably large. They also lead to repulsive cores that do not fit in with the usual phenomenological hard cores as naturally as the larger heavy-photon masses. Brief mention is made of possible means of detecting the vector meson and of the effects of its finite mean life. (auth)

• Research Organization: Yale Univ., New Haven, CT (United States)
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• NSA Number: NSA-15-000868
• OSTI ID: 4122623
• Journal Information: Physical Review, Journal Name: Physical Review Journal Issue: 1 Vol. 120; ISSN PHRVAO; ISSN 0031-899X
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

COMPOUND NUCLEI
EXCITATION
INTERACTIONS
KAONS
KAONS-MINUS
MASS
MESONS
NUCLEI
NUCLEONS
PHOTONS
PHYSICS
SPIN