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Prog. Theor. Phys. Vol. 14 No. 6 (1955) pp. 527-534

On the Interaction between Hyperons and Nucleons and the Hyperfragments

Kazuhiko Nishijima

Department of Physics, Osaka City University, Osaka

(Received September 27, 1955)

Abstract:

Based on the principle of charge independence and the experimentally established evidences for the existence of the hyperfragment ³H^*, the nature of the force between a Λ⁰ particle and a nucleon is investigated. It is shown that the range of the Λ-N force cannot be longer than half the pion Compton wave length and that its well depth parameter is larger than about 0.4. This result suggests us the possible existence of the so-called hyper di-nucleons. Next, the mechanism of the non-mesonic to decays of a hyperfragment ⁴He^* is investigated. A qualitative argument leads to the conclusion that the spin of the Λ⁰ particle cannot be larger than 3/2.

URL : http://ptp.ipap.jp/link?PTP/14/527/
DOI : 10.1143/PTP.14.527

[ Full Text PDF : FREE ACCESS (549K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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References:

1. See in this connection, K. Nishijima, Prog. Theor. Phys. 14 (1955), 523[PTP].
2. Danysz and Pniewski, Phil. Mag. 44 (1953), 348.
3. See for instance, Fry and Swami, Phys. Rev. 96 (1954), 809[APS].
4. K. Nishijima, Prog. Theor. Phys. 13 (1955), 285[PTP].
5. Bonetti et al, Nuovo Cim. 11 (1954), 210.
   Debenedetti et al, Nuovo Cim. 12 (1954), 466.
   Occhialini, Proc. Fifth Roch. Conf. p. 175.
6. Blatt and Jackson, Phys. Rev. 76 (1949), 18[APS].
7. Blatt and Weisskopf, Theoretical Nuclear Physics, John Wiley & Sons, p. 75.
8. S. Iwao, Prog. Theor. Phys. 13 (1955), 111[PTP].
9. Folwer et al, Phys. Rev. 98 (1955), 121[APS].
10. Grilli and Levi Setti, Nuovo Cim. 12 (1954), Suppl. No. 2, 466.
11. Hill et al, Bull Am. Phys. Soc. 29 (1954), 60.
    Crussard et al, Compt. Rend. Ac. Sc. 236 (1953), 64.
12. Ciok, Danysz and Gierla, See ref. 10).
    Occhialini, See ref. 5).
13. Durbin, Loar and Steinberger, Phys. Rev. 84 (1951), 581[APS].
    In the text we have assumed that the cross sectios of the following two reactions are equal:
    π^-+d→n+n and π⁺+d→p+p.
    The latter cross section is given in the literature.
14. Cheston and Primakoff, Phys. Rev. 92 (1953), 1537[APS].

Citing Article(s) :

1. Progress of Theoretical Physics Vol. 16 No. 4 (1956) pp. 259-264 :

   The Range of the Interaction between Different Fermions

   Michiji Konuma

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