Sum rules in QCD for g(eta Lambda Lambda) and g(pi Lambda Sigma)

摘要

New relations between the Borel QCD sum rules for the strong couplings of the Sigma(o) and Lambda hyperons are derived. It is shown that, using the sum rules for g(M Sigma Sigma), M = pi(o),eta, as a starting point, one can readily obtain the corresponding sum rules for the coupling constants g(eta AA) and g(pi Lambda Sigma o). The values of these constants are calculated in a specific parameter region.