Covariant meson - baryon scattering with chiral and large N c constraints 1
نویسندگان
چکیده
We give a review of recent progress on the application of the relativistic chiral SU (3) Lagrangian to meson-baryon scattering. It is shown that a combined chi-ral and 1/N c expansion of the Bethe-Salpeter interaction kernel leads to a good description of the kaon-nucleon, antikaon-nucleon and pion-nucleon scattering data typically up to laboratory momenta of p lab ≃ 500 MeV. We solve the covariant coupled channel Bethe-Salpeter equation with the interaction kernel truncated to chiral order Q 3 where we include only those terms which are leading in the large N c limit of QCD.
منابع مشابه
Relativistic chiral SU ( 3 ) symmetry , large N c sum rules and meson - baryon scattering
The relativistic chiral SU (3) Lagrangian is used to describe kaon-nucleon scattering imposing constraints from the pion-nucleon sector and the axial-vector coupling constants of the baryon octet states. We solve the covariant coupled-channel Bethe-Salpeter equation with the interaction kernel truncated at chiral order Q 3 where we include only those terms which are leading in the large N c lim...
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