The European Physical Journal A

, Volume 31, Issue 4, pp 491–494 | Cite as

Large- N Weinberg-Tomozawa interaction and spin-flavor symmetry

  • C. Garcıa-Recio
  • J. Nieves
  • L. L. Salcedo
QNP 2006


The construction of an extended version of the Weinberg-Tomozawa Lagrangian, in which baryons and mesons form spin-flavor multiplets, is reviewed and some of its properties discussed, for an arbitrary number of colors and flavors. The coefficient tables of spin-flavor irreducible representations related by crossing between the s-, t- and u-channels are explicitly constructed.


14.20.Gk Baryon resonances with S = 0 11.15.Pg Expansions for large numbers of components (e.g. , 1/Nc expansions) 11.10.St Bound and unstable states; Bethe-Salpeter equations 11.30.Rd Chiral symmetries 


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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • C. Garcıa-Recio
    • 1
  • J. Nieves
    • 1
  • L. L. Salcedo
    • 1
  1. 1.Departamento de Física Atómica, Molecular y NuclearUniversidad de GranadaGranadaSpain

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