(Received July 11, 1964)
From the theoretical viewpoint that there are two kinds of “particles” in Nature having structural orientations mutually opposite to each other, a generalized symmetry rule of weak interactions is introduced here. On the basis of the assumption that fermions (antifermions) have got a well defined structural orientation, though this is not the case for bosons (antibosons), it is shown that the conservation of parity in Σ±→n+π± decays can be explained in the general framework of weak interactions and is related to the fact that Σ- is not the antiparticle of Σ+. Finally, some remarks about the composite nature of mesons and baryons, the conservation of lepton and baryon number and the nonexistence of any rule like the conservation of meson number are made in view of the above assumption.
URL : http://ptp.ipap.jp/link?PTP/34/116/
DOI : 10.1143/PTP.34.116