Spectroscopy of ${\mathrm{q}}^3{\bar{\mathrm{q}}}^3$-States in Quark Model and Baryon-Antibaryon Enhancements

Abstract

We study the mass spectrum of the ${\mathrm{q}}^3{\bar{\mathrm{q}}}^3$ mesons both from the quark model with triquark correlations and from common quark model with colormagnetic interactions and with relative S-waves between quarks. Two cluster configurations $({\mathrm{q}}^3)-({\bar{\mathrm{q}}}^3)$ and $({\mathrm{q}}^2\bar{\mathrm{q}})-(\mathrm{q}{\bar{\mathrm{q}}}^2)$ are considered. In the spectrum we find rather stable states which have the same quantum number with particle resonances which are corresponding to the $p\bar{p}$ enhancement, $p\bar{\Lambda }$ enhancement and $\Lambda \bar{\Lambda }$ enhancement with spin-$0$ or $1$. This imply these enhancements are NOT experimental artifacts. The color-spin-flavor structures of $p\bar{p}$, $p\bar{\Lambda }$, and $\Lambda \bar{\Lambda }$ enhancements are revealed. The existence of spin-$1$ $\Lambda \bar{\Lambda },p\bar{\Lambda },p\bar{p}$ enhancements is predicted.

Comments: 45 pages, 5 figures