On Present-Day Problems in Theory of Elementary Particles

Through the Japan-Brasil Collaboration in cosmic-ray experiment, there have been discovered the events of production and decay of H-quantum, SHquantum and UH-quantum in the phenomena of multiple production of mesons. They found other interesting events, too, such as the Centauro type, in the same region of extremely high energy. Experimental reports were published so far about these findings/> and their theoretical implications were synthetically discussed in a special issue of Supplement of Prog. Theor. Phys. in 1973.2> Later on, the experimental accuracy has been improved, and still more events have been discovered.8> This issue also contains their report of recent experimental results. I discussed the meaning of the importance of these findings in Prog. Theor. Phys. Suppl. No. 54 (1973), and also in my pamphlet "Opening door to new physics" distributed together with it. Almost all research workers of the theory of elementary particles seem to consider that the gauge theory or "the unified theory of all fundamental forces" has been a recent success in the theory of elementary particles. "New physics" that I mean, however, does not indicate the sort of things such as quark, charm, colour, gluon, weak boson, and so on, because all these things are what were considered on inferences from the theories hitherto presented, ranging from Sakata's two meson theory up to the Sakata model, the Nagoya model and others, and are what have been assumed in order to reinforce these former theories. "New physics" is the one that is concerned with such things as H-,SHand UH-quanta, Centauro phenomena and the related events, which were not expected at all from the former theories. These phenomena at ultra high energies are entirely new, and are named "new states of matter" by C. M.