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Hyperon Non-leptonic Weak Decays in the Chiral Perturbation Theory II
K. Takayama, M. Oka
Hyperon non-leptonic weak decay amplitudes are studied in the chiral perturbation theory. The weak interaction vertices caused by the four quark operators are substituted by the pr…
Roles of Quarks in Strong and Weak YN Interactions
M. Oka, Y. Tani, T. Inoue +1
The short range parts of the strong and weak hyperon-nucleon interactions are studied with quark substructure of the baryons taken into account. A summary of the quark cluster mode…
Hyperon Non-leptonic Weak Decays in the Chiral Perturbation Theory I
K. Takayama, M. Oka
Hyperon non-leptonic weak decay amplitudes are studied in the chiral perturbation theory. We employ the low energy effective weak Hamiltonian which contains the perturbative QCD co…
Suppression of Pi NN* Coupling and Chiral Symmetry
D. Jido, Y. Nemoto, M. Oka +1
Meson-baryon couplings between positive and negative parity nucleons are investigated using two point correlation functions in the soft meson and the chiral limit. We find that the…