Large- N Weinberg-Tomozawa interaction and spin-flavor symmetry
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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.
PACS.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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- 5.a) C. García-Recio, J. Nieves, L.L. Salcedo, Phys. Rev. D 74, 036004Google Scholar