Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-12-03
Nucl.Phys. A721 (2003) 755-758
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, Talk given at XVI International Conference on Particles and Nuclei (PANIC02), Osaka, Japan, Sep.30 - Oct.4, 2002
Scientific paper
10.1016/S0375-9474(03)01174-6
Coupling constants of the pseudoscalar mesons to the octet baryons are computed in the QCD sum rule approach. The pi-NN, eta-NN, pi-XiXi, eta-XiXi, pi-SigmaSigma, eta-SigmaSigma as well as pi-Lambda-Sigma couplings are studied. Determining the pertinent Dirac structure in the correlation function, we analyze the couplings in the SU(3) limit. We find the F/D ratio to be \sim 0.6-0.8 that is consistent with the SU(6) value. We also estimate the SU(3) breaking effect using a projected correlation function method.
Doi Takumi
Kim Hungchong
Kondo Yoshihiko
Oka Makoto
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