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Prog. Theor. Phys. Vol. 51 No. 6 (1974) pp. 1893-1906

[ Full Text PDF : FREE ACCESS (1066K) ]

Study of η-η′ Mixing and SU(4) Quartet Scheme

Tsuneo Suzuki

Department of Physics, Kanazawa University, Kanazawa

(Received November 29, 1973)

Abstract:

It is shown that the so-called Okubo ansatz and Iizuka rule in the quark model are not applicable to reduced matrix elements involving isoscalar 0-mesons, whereas their generalization to the SU(4) quartet scheme are very successful in describing unifiedly all vertices with isoscalar mesons. As a result, η′(958) should not be assigned predominantly to the SU(4) singlet state, but rather to the 15-plet state in order to explain especially the suppression of η′ production compared with η in πN scattering. This leads us to that other symmetry breaking term than (4, 4*) ⊕ (4*, 4) must be considered in chiral SU(4) ×SU(4) scheme.


URL : http://ptp.ipap.jp/link?PTP/51/1893/
DOI : 10.1143/PTP.51.1893

[ Full Text PDF : FREE ACCESS (1066K) ] Citation:

References:

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Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 53 No. 2 (1975) pp. 523-531 :
    η and η' Meson Mixing in U(6) Symmetry
    Hiroyuki Nagai and Akihiro Nakamura
  2. Progress of Theoretical Physics Vol. 53 No. 5 (1975) pp. 1519-1521 :
    Meson Masses in the Quartet Model
    Hiroyuki Nagai and Akihiro Nakamura

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