Gauge interaction of baryons in hidden local symmetry
The hidden local symmetry of the non-linear sigma model is extended to include baryons. In two papers (M. Bando, T. Kugo and Y. Yamawaki:Phys. Rep.,164, 217 (1988);Prog. Theor. Phys.,73, 1541 (1985)), the low-energy theorems for mesons were successfully reproduced. It seems important to investigate whether some kind of the low-energy theorems for baryons holds in the same framework. Indeed, theS-wave pion-nucleon scattering lengths, the conserved vector currents (CVC) of β-decays of baryons and Sakurai's scenario of the electromagnetic interactions of hadrons are all reproduced. Our interaction Lagrangians are stable under the small variation of each vertex. Thus, they deserve the effective one.
PACS12.90 Miscellaneous theoretical ideas and models
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