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Prog. Theor. Phys. Vol. 55 No. 5 (1976) pp. 1488-1503

Photon Transitions between Baryons in a New Hadron Scheme

Hiroshi Sugimoto^* and Mihoko Toya

^*Kanazawa Institute of Technology, Kanazawa 921
Department of Physics, Kyoto University, Kyoto 606

(Received December 1, 1975)

Abstract:

Photon transitions from the ground state baryon to the nonstrange excited one with L = 0, 1 and 2 are investigated. The discussion is based on a new scheme of hadron composite model which takes account of the lower component of the Dirac spinor of constituent particles even in a hadron rest system. There appear generally four independent model amplitudes. Each process γ + p → B₈^* is described in terms of an individual model amplitude. This helps us to explain the characteristic features of experiment and solve the troubles found in the nonrelativistic scheme. Both magnitudes and signs of predicted amplitudes are shown to be in good agreement with experimental data. From this comparison the specific features of the model amplitudes are found. Discussion is made for higher excited baryons.

URL : http://ptp.ipap.jp/link?PTP/55/1488/
DOI : 10.1143/PTP.55.1488

[ Full Text PDF : FREE ACCESS (1223K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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Citing Article(s) :

1. Progress of Theoretical Physics Vol. 57 No. 3 (1977) pp. 968-978 :

   Decays of Baryon Resonances in a New Hadron Scheme

   Mihoko Toya

2. Progress of Theoretical Physics Vol. 59 No. 2 (1978) pp. 480-490 :

   Analysis of the Photocouplings of Baryon Resonances

   Masako Bando, Hiroshi Sugimoto and Mihoko Toya

3. Progress of Theoretical Physics Vol. 59 No. 3 (1978) pp. 903-916 :

   Decays of the New and Old Hadrons. I

   Masako Bando, Hiroshi Sugimoto and Mihoko Toya

4. Progress of Theoretical Physics Vol. 62 No. 1 (1979) pp. 168-185 :

   Hadron Matrix Elements of Quark Operators in the Relativistic Quark Model

   Masako Bandō, Hiroshi Sugimoto and Mihoko Toya

5. Progress of Theoretical Physics Vol. 63 No. 4 (1980) pp. 1452-1454 :

   Note on the Photocouplings of Mesons

   Masako Bando, Hiroshi Sugimoto and Mihoko Toya

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