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Possible dynamical mechanism generatingSU 3 andSU 2 symmetry breaking

Возможный динамический механизм, порождаюший нарушениеSU 3 иSU 2 симметрий

  • Published:
Il Nuovo Cimento A (1965-1970)

An Erratum to this article was published on 01 May 1984

Summary

We discuss a dynamical mechanism forSU 3 andSU 2 symmetry breaking, based on scalar-meson-dominated tadpoles with σ-model-inspired meson and quark couplings. Meson and baryon mass differences are consistently described in terms of the two strange and nonstrange scalar-meson couplings to currents, and octet enhancement is obtained in a natural way.

Riassunto

Si discute un meccanismo dinamico per la rottura diSU 3 e diSU 2, basato su tadpoles dominati da mesoni scalari con accoppiamenti suggeriti dal modello σ. Le differenze di massa dei mesoni e dei barioni sono descritte consistentemente in termini dei due accoppiamenti dei mesoni scalari strano e nonstrano alle correnti, e la dominanza dell'ottetto è ottenuta in modo naturale.

Резюме

Мы обсуждаем динамический механиэм нарушенияSU 3 иSU 2 симметрий, основанный на «роловастиках» со связями мезонов и кварков в σ-модели. Разности масс мезонов и барионов непротиворечиво описываются в терминах двух связей странных и нестранных скалярных мезонов с токами. Естественным образом получается доминантность октета.

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Author notes

  1. M. D. Scadron

    Present address: University of Arizona, 85721, Tueson, AZ, USA

Authors and Affiliations

  1. Istituto di Fisica Teorica dell'Università, Trieste, Italia

    N. Paver

  2. Sezione di Trieste, Istituto Nazionale di Fisica Nucleare, Italia

    N. Paver

  3. Scuola Internazionale Superiore di Studi Avanzati, Trieste, Italia

    N. Paver & M. D. Scadron

Authors
  1. N. Paver
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  2. M. D. Scadron
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Additional information

Supported in part by the US Department of Energy contract DE-AC02-80ER 10663.

Перевебено ребакцией.

An erratum to this article is available at http://dx.doi.org/10.1007/BF02724532.

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Paver, N., Scadron, M.D. Possible dynamical mechanism generatingSU 3 andSU 2 symmetry breaking. Nuov Cim A 79, 57–72 (1984). https://doi.org/10.1007/BF02831079

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