Test of an additive diquark spectator model for meson-baryon quasi-two-body reactions

M. Zrałek; W. J. Metzger; R. T. Van de Walle; C. Dionisi; A. Gurtu; M. Mazzucato; B. Foster

doi:10.1103/PhysRevD.19.820

Test of an additive diquark spectator model for meson-baryon quasi-two-body reactions

M. Zrałek, W. J. Metzger, R. T. Van de Walle, C. Dionisi, A. Gurtu, M. Mazzucato, and B. Foster

Phys. Rev. D 19, 820 – Published 1 February 1979

Abstract

An additive diquark model is proposed to relate the forward cross sections of meson-baryon quasi-two-body reactions. The model consists of a quark-diquark structure for baryons combined with additivity of quark-(di)quark amplitudes. Good agreement is found between this model, which contains only one free parameter, and a large body of experimental data for charge-exchange and strangeness-exchange meson-baryon two-body reactions. This is in contrast to the SU(6)-symmetric additive quark model which disagrees violently with the data.

Received 12 June 1978

DOI:https://doi.org/10.1103/PhysRevD.19.820

Authors & Affiliations

M. Zrałek^*, W. J. Metzger, and R. T. Van de Walle

Fysisch Laboratorium Universiteit van Nijmegen, Nijmegen, Netherlands

C. Dionisi, A. Gurtu^†, and M. Mazzucato

CERN, European Organization for Nuclear Research, Geneva, Switzerland

B. Foster

Nuclear Physics Laboratory, University of Oxford, Oxford, United Kingdom

^*On leave from Silesian University, Katowice, Poland.
^†Visiting scientist from the Tata Institute of Fundamental Research, Bombay, India.

Addendum to "Test of an additive diquark spectator model for meson-baryon quasi-two-body reactions"

M. Zrałek, W. J. Metzger, and R. T. Van de Walle

Phys. Rev. D 20, 344 (1979)

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Vol. 19, Iss. 3 — 1 February 1979

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