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Prog. Theor. Phys. Vol. 20 No. 4 (1958) pp. 505-528

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Tensor and Spin-Orbit Forces in Nucleon-Nucleon Scattering

Ryozo Tamagaki

Department of Physics, Kyoto University, Kyoto

(Received July 4, 1958)

Abstract:

In order to investigate effects of a tensor force and to examine necessity of introducing a spin-orbit force at high energies, nucleon-nucleon scattering at 150 Mev is analysed. The analysis is made taking into account some characteristic features of the pion-theoretical nuclear forces. It is shown that the experimental data around 150 Mev can be well explained by two main features of nuclear forces; (i) a strong tensor force in the outer part of the interaction and (ii) a hard-core-like repulsive interaction in the inner part. It should be emphasized that the former feature, which is the most characteristic one of the pion-theoretical nuclear forces, is decisively important at such high energies as well as at low energies. We find no positive evidences for such spin-orbit forces as play an important role around 150 Mev. This conclusion is in conflict with the prediction of very strong spin-orbit forces recently made by Signell and Marshak and by Gammel and Thaler. This point is discussed quite in detail. Especially, it is shown that Signell and Marshak's spin-orbit coupling potential comes from their undue reliance on the inner part of Gartenhaus' potential.


URL : http://ptp.ipap.jp/link?PTP/20/505/
DOI : 10.1143/PTP.20.505

[ Full Text PDF : FREE ACCESS (2025K) ] Citation:

References:

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  18. Progress of Theoretical Physics Vol. 24 No. 4 (1960) pp. 917-918 :
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  19. Progress of Theoretical Physics Vol. 24 No. 5 (1960) pp. 1033-1048 :
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  21. Progress of Theoretical Physics Vol. 25 No. 4 (1961) pp. 716-717 :
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