Relativistic description of heavy tetraquarks
High Energy Physics - Phenomenology
2009-11-13 v1
Abstract
The masses of the ground state and excited heavy tetraquarks with hidden charm and bottom 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 the open charm threshold are discussed. The obtained results indicate that X(3872), Y(4260), Y(4360), Z(4433) and Y(4660) can be tetraquark states with hidden charm.
Keywords
Cite
@article{arxiv.0802.1806,
title = {Relativistic description of heavy tetraquarks},
author = {D. Ebert and R. N. Faustov and V. O. Galkin},
journal= {arXiv preprint arXiv:0802.1806},
year = {2009}
}
Comments
6 pages, talk at the scientific session-conference of Nuclear Physics Department RAS ``Physics of fundamental interactions'', 25-30 November 2007, ITEP, Moscow