Relativistic description of heavy tetraquarks

Details Relativistic description of heavy tetraquarks Relativistic description of heavy tetraquarks

2008-02-13

arxiv.org/abs/0802.1806v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, talk at the scientific session-conference of Nuclear Physics Department RAS ``Physics of fundamental interactions'',

Scientific paper

10.1134/S1063778809010220

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.

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