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Prog. Theor. Phys. Vol. 57 No. 1 (1977) pp. 169-183

Role of the Nucleon Exchange in the Diffraction Dissociation πN →π(N π)

Akira Minaka, Hiroyuki Sumiyoshi and Masayuki Uehara

Department of Physics, Kyushu University, Fukuoka 812

(Received July 3, 1976)

Abstract:

Properties of the nucleon exchange and the direct nucleon pole terms are studied in the diffraction dissociation πN →π(N π). It is shown that contrary to the naive expectation, the nucleon exchange term with the s-channel helicity conserving πN scattering amplitude cannot give the maximum at φ_GJ = 0 in the φ_GJ distribution. The transverse momentum distributions in the lab. frame reflect well the cos θ_GJ but not the φ_GJ distributions. We need “something” besides the pion exchange term to enhance the backward side, cos θ_GJ < 0, but it is questionable whether the nucleon exchange ferm plays the role of “something” completery. Including cross-over phenomena, it is qualitatively examined that the resonance production term plays the role of the “something”.

URL : http://ptp.ipap.jp/link?PTP/57/169/
DOI : 10.1143/PTP.57.169

[ Full Text PDF : FREE ACCESS (1320K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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References:

1. For a review talk, see G. Goggi, Proceedings of the VIth International Colloquium on Multiparticle Reactions, Oxford, July 1975, p. 153.
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9. See for example, M. Ida, Phys. Rev. 136 (1964), B1767[APS].
10. E. L. Berger, Phys. Rev. D 11 (1975), 3214[APS].
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Citing Article(s) :

1. Progress of Theoretical Physics Vol. 56 No. 4 (1976) pp. 1183-1198 :

   Absorbed Two-Component Model for Low Mass Nπ System Produced in Diffraction Dissociation

   Masayuki Uehara

2. Progress of Theoretical Physics Vol. 57 No. 4 (1977) pp. 1334-1347 :

   Phenomenological Analysis of Nucleon Diffraction Dissociation in the Drell-Hiida-Deck Model

   Tachishige Hirose, Kimiyo Kanai and Tetsuro Kobayashi

3. Progress of Theoretical Physics Vol. 60 No. 2 (1978) pp. 456-473 :

   Analysis of the Nucleon Diffraction Dissociation N →(πN) by a Two-Component Model

   Akira Minaka and Hiroyuki Sumiyoshi

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