Kinematical Investigation of the S-matrix

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概要

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• A general method is proposed to investigate the kinematical properties of the S-matrix in a covariant manner, independent of the method of approximation and the type of interaction. The S-matrix is separated into a definite number of independent bases, i.e., the kinematical parts and their dynamical coefficients. The number and types of such kinematical bases are obtained for one fermion problems and boson decay processes. As an application we can derive some absolute selection rules for three body decays. For example, a spin 0 particle cannot decay into three photons, any two of which making an angle of 120° with each other. The same result holds for the decay of a spin 1 particle into three identical spin 0 particles. Some of our results are useful for analysing the decay of τ-meson.

• 理論物理学刊行会の論文

著者

• Kawaguchi Masaaki

  Research Institute For Fundamental Physics Kyoto University

• Kawaguchi Masaaki

  Research Institute for Fundamental Physics, Kyoto University

関連論文

• Note on the Decay Interactions of Hyperons and Heavy Mesons
• Note on the Decays of Σ Particles
• Kinematical Investigation of the S-matrix
• Quantum Field Theory of Unstable Particles
• On the Relation between Meson-Nucleon Scattering and Photomeson Production
• Note on the Decay Interactions of Hyperons and Heavy Mesons
• Polarization of the Recoil Nucleon from the Photoproduction of Pion

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