ОБ ОЦЕНКЕ МАСС ДВУХ ЛЕГЧАЙШИХ КВАРКОВ.

Simple relations between the masses of the two lightest up and down quarks were obtained on the basis of the simple physically based model compatible with the present-day theory of strong interactions, i.e. with quantum chromodynamics. Relations between the u- and d- quark masses, on one hand, and nucleon and pion masses, on the other hand, are also established. The u- and d-quark masses mu = 1,903 MeV, md = 4,594 MeV, calculated with the help of the obtained relations, are in very good agreement with the modern evaluations and calculations of these quantities. The average of the u and d quark masses mud = 3,248 MeV, obtained in the proposed approach, is also in good agreement with previous calculations. [ABSTRACT FROM AUTHOR]