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Prog. Theor. Phys. Vol. 20 No. 2 (1958) pp. 181-191

[ Full Text PDF : FREE ACCESS (560K) ]

Neutron-Proton Scattering and Pion Theory of Nuclear Forces

Wataro Watari

Research Institute for Atomic Energy, Osaka City University, Osaka

(Received May 21, 1958)

Abstract:

The n-p scattering at 90 Mev is discussed in detail from the standpoint of reference 1). Around this energy phase shifts with L \geqslant 2 are almost completely determined by the one-pion-exchange potential. Phase shifts with L = 1 should be qualitatively determined by the pion theory. Phase shifts with L = 0 must be determined phenomenologically. In this paper, using P-wave phase shifts obtained by Otsuki from the p-p scattering data, we determine scattering parameters in the (J = 1)-states from the n-p scattering analysis. In section 2, n-p polarizations are analyzed and some sets of phase shifts with J = 1 which are consistent with the experiments are determined. Using thus determined phase shifts, angular distributions are calculated and compared with experimental data in section 3. Thus we find that the static pion-theoretical potential can reproduce n-p experimental data at 90 MeV without any serious modifications.


URL : http://ptp.ipap.jp/link?PTP/20/181/
DOI : 10.1143/PTP.20.181

[ Full Text PDF : FREE ACCESS (560K) ] Citation:

References:

  1. J. Iwadare, S. Otsuki, R. Tamagaki and W. Watari, Prog. Theor. Phys. Suppl. No. 3 (1956), 32[PTP]; Prog. Theor. Phys. 15 (1956), 86[PTP]; ibid. 15 (1956), 455[PTP]; ibid. 15 (1956), 472[PTP]; ibid. 15 (1956), 604[PTP].
  2. R. H. Stahl and N. F. Ramsey, Phys. Rev. 96 (1954), 1310[APS].
    C. Y. Chih and W. M. Powell, Phys. Rev. 106 (1957), 539[APS].
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  5. J. Iwadare, S. Otsuki, R. Tamagaki and W. Watari, Nuovo Cim. 3 (1956), 633.
  6. S. Otsuki, Prog. Theor. Phys. 20 (1958). 171.
  7. R. Tamagaki, Prog. Theor. Phys. to be published.
  8. M. Matsumoto and W. Watari, Prog. Theor. Phys. 12 (1954), 503[PTP].
  9. M. Matsumoto and W. Watari, Prog. Theor. Phys. 11 (1954), 63[PTP].
  10. S. Otsuki, R. Tamagaki and W. Watari, Prog. Theor. Phys. 19 (1958), 217[PTP].

Citing Article(s) :

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  20. Progress of Theoretical Physics Vol. 24 No. 5 (1960) pp. 1033-1048 :
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  21. Progress of Theoretical Physics Vol. 24 No. 6 (1960) pp. 1307-1316 :
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  22. Progress of Theoretical Physics Vol. 25 No. 2 (1961) pp. 247-258 :
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  23. Progress of Theoretical Physics Vol. 25 No. 4 (1961) pp. 716-717 :
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  24. Progress of Theoretical Physics Vol. 27 No. 6 (1962) pp. 1199-1220 :
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    Norio Hoshizaki, Shoichiro Otsuki, Wataro Watari and Minoru Yonezawa

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