Relativistic description of heavy tetraquarks

Journal Article · Thu Jan 15 00:00:00 EST 2009 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778809010220· OSTI ID:21406034

Ebert, D ^[1]; Faustov, R N; Galkin, V O ^[2]

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1. Humboldt-Universitaet zu Berlin, Institut fuer Physik (Germany)
2. Russian Academy of Sciences, Dorodnicyn Computing Centre (Russian Federation)

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.

• OSTI ID: 21406034
• Journal Information: Physics of Atomic Nuclei, Vol. 72, Issue 1; Other Information: DOI: 10.1134/S1063778809010220; Copyright (c) 2009 Pleiades Publishing, Ltd.; ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARMONIUM
D QUARKS
EXCITED STATES
EXPERIMENTAL DATA
FORM FACTORS
GLUONS
GROUND STATES
RELATIVISTIC RANGE
U QUARKS
BOSONS
DATA
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
FERMIONS
HADRONS
INFORMATION
MESONS
NUMERICAL DATA
PARTICLE PROPERTIES
QUARKONIUM
QUARKS