arXiv:0808.3912·v1·High Energy Physics — Phenomenology
Excited heavy tetraquarks with hidden charm
D. Ebert🇷🇺 · R. N. Faustov🇷🇺 · V. O. Galkin🇷🇺
Abstract
The masses of the excited heavy tetraquarks with hidden charm are calculated within the relativistic diquark-antidiquark picture. The dynamics of the light quark in a heavy-light diquark is treated completely relativistically. The diquark structure is taken into account by calculating the diquark-gluon form factor. New experimental data on charmonium-like states above open charm threshold are discussed. The obtained results indicate that X(3872), Y(4260), Y(4360), Z(4248), Z(4433) and Y(4660) could be tetraquark states with hidden charm.
Comments: 11 pages