Dynamical Theory of Hadron Interactions Based upon Extended Particle Picture. II : Construction of the Hadron Interactions

概要

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The interaction of hadron is discussed on the basis of an extended particle model. We assume that the interaction between hadrons is due to the coupling between currents carried by excitons excited in the particles, which is mediated by some intermediate field. This picture enables us to write down all hadron interactions once this original interaction between excitons is given-thus leading to a more unified and a dynamical understanding of the hadron interactions. As examples π-π, K^^--N and π-N interactions are discussed. As far as the comparison is possible, the resulting meson-meson interactions and the meson-baryon interactions are in agreement with those obtained by SU_6 or its relativistic generalization. But a great advantage of our model is that it gives furthermore new relations between these meson-meson interactions and meson-baryon interactions because of its unified structure. For example, we find that in our model the coupling constant for the ρππ interaction g_<ρππ> is related to the (pseudo-scalar) π-N coupling constant g by (g^2_<ρππ>)/(4π)=(6/5)^2((m_ρm_π)/(M^2))((g^2)/(4π)), where m_ρ, m_π and M denote respectively the mass for ρ,π and the nucleon. This relation is satisfied very well experimentally.
理論物理学刊行会の論文
1977-07-25