Abstract
An effective Lagrangian involving composite pseudoscalar and scalar mesons as well as scalar and pseudoscalardiquarks is derived from a chiralU(3) L ×U(3) R invariant four-quark theory using path integral methods. We obtain mass relations for the diquarks where all free parameters can be fixed in the meson sector. We also calculate weak diquark decay constants, and discuss baryon masses in terms of a quark-diquark model.
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Work supported in part by BMFT grant 06 0R 762
I would like to thank W. Weise for many stimulating discussions and the careful reading of the manuscript. I also thank D. Kahana for his cooperation in part of the work reported here.