This introductory book, intended for general audiences, covers a broad range of subjects in the elementary particle physics: gauge theory, quark model, parton model, quantum chromodynamics, Weinberg-Salam theory, CP-violation, spontaneous symmetry breaking, Higgs mechanism, Higgs particle, etc. Those subjects are explained, plainly and mostly without using equations.
Revisions: Apr 22, 2016. In the ch.2, a mistake was fixed at calculating the change of mass by lifting the mass. Several translation errors to English from Japanese were fixed.