Brief Summary of Each Supplement
Progress of Theoretical Physics Supplement No. 167
The Jubilee of the Sakata Model
Proceedings of the International Symposium pnΛ 50
Edited by Masayasu Harada, Yoshio Ohnuki, Shoji Sawada and Koichi Yamawaki
This volume contains 14 papers presented at the ``International
Symposium: The Jubilee of the Sakata Model'', held at Nagoya University
on November 25th and 26th, 2006. The contributors include
Professor G. 't Hooft and many eminent physicists.
The volume also includes contributions from Professors H. J. Lipkin,
Y. Nambu and L. B. Okun, who were not able to attend the symposium but kindly
accepted our invitation to publish papers in the Proceedings.
The Sakata Model was proposed by Shoichi Sakata, late Professor of
Nagoya University, and was a key step toward the quark model. The
paper in which this model is proposed was published in December 1956
in Progress of Theoretical Physics, Vol. 16 (1956), pp. 686-688.
Not merely a prototype of the quark model, the Sakata Model was developed by
Sakata himself, together with Z. Maki, M. Nakagawa and Y. Ohnuki,
into a larger picture composite model (the ``Nagoya Model'') to
include leptons. This led to a revolutionary step, the neutrino flavor
mixing, so-called Maki-Nakagawa-Sakata (MNS) matrix. Furthermore, the
Kobayashi-Maskawa (KM) matrix describing quark flavor mixing and $CP$
violation was proposed by Sakata's disciples, M. Kobayashi and
T. Maskawa. The MNS and KM matrices are now established as THE theory
of the flavors of quarks and leptons in modern particle physics.
The symposium was held to
celebrate the 50th anniversary of the Sakata Model and its subsequent
great developments. The symposium was devoted to historical reviews of the
Sakata Model and related developments and also to various perspectives
of particle theory today. The volume will be of value to those who are
interested in the modern view of a dramatic history of the Sakata model
developed into the quark model,
a glorious history of Sakata school which led to establishing
the flavor physics in modern particle physics, and all that.
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