The six-quark structure of long-lived $D$-mesons and $\psi /J$

Abstract

The harmonic quarks are applied to the analysis of quark structures of long-lived $D$-mesons and $\psi /J$. In the harmonic quark model the quarks of long-lived mesons (${\pi }^0$, ${\pi }^{\pm }$, $K^{\pm }$, $K^0$, $B^0$, $B^{\pm }$) are weakly relativistic objects with the excess energy of valent quarks less than 7 MeV. In contrast to this, the long-lived $D$-mesons in two-quark standard have the apparent excess energies of a few hundred MeV. It was established that all long-lived $D$-mesons and $\psi /J$ have the six-quark structures. There are two valent quarks and two additional neutral quark-antiquark $u$-pairs. The quark structures of $D^0$, $D^{\pm }$, $D_s^{\pm }$ and $\psi /J$ are given. The excess energies of six-quark $D$-mesons also does not exceed 7 MeV. A six-color quark composition and the absence of two-quark $D$-mesons in the context of QCD are discussed.

Comments: 10 pages, 2 figures