On the Nature of τ-Mesons.I.

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The mass, the life and the interaction with nucleons of τ-mesons discovered in photographic plates are qualitatively discussed. The probabilities of τ→π+π^0 and τ→π+γ for various combinations of their couplings are calculated by Tomonaga-Schwinger formalism. The generalized selection rule for the system composed of many mesons is presented, from which some particular sets of the types of these mesons, for example scalar and pseudoscalar, are admitted to explain the rather long life time of τ-meson, 〜10^-11 sec. The life time for τ→3π decay calculated by our method is obtained as long as 10^-11 sec. consistent with experiments. This result suggests that the interaction of π-meson with nucleon is considerably weak. Some arguments for and against such presumption are discussed. The varieties of mesons, called varitrons, are classified as π- and μ-types.
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