  The visible universe - it is the universe of nucleons and electrons. The
appearance of nucleon mass is caused by the violation of chiral symmetry in
quantum chromodynamics (QCD). For this reason, the experiments on high energy
accelerators cannot shed light on the origin of the matter in the visible
universe. The origin of the mass of matter will be clarified, when the
mechanism of chiral symmetry violation in QCD will be elucidated.
