Relativistic description of heavy tetraquarks

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.

6 pages, talk at the scientific session-conference of Nuclear Physics Department RAS ``Physics of fundamental interactions'', 25-30 November 2007, ITEP, Moscow

References in corpus (6)

• Diquark-Antidiquarks with Hidden or Open Charm and the Nature of X(3872)
• Masses of excited heavy baryons in the relativistic quark-diquark picture
• Four Quark Interpretation of Y(4260)
• Masses of heavy tetraquarks in the relativistic quark model
• Masses of heavy baryons in the relativistic quark model
• Indications of a Four-Quark Structure for the X(3872) and X(3876) Particles from Recent Belle and BABAR Data

Cited by in corpus (11)

• An overview of $XYZ$ new particles
• Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
• Hidden-charm and bottom tetra- and pentaquarks with strangeness in the hadro-quarkonium and compact tetraquark models
• Quark model description of the tetraquark state X(3872) in a relativistic constituent quark model with infrared confinement
• Spectroscopy of the hidden-charm $[qc][\bar{q}\bar{c}]$ and $[sc][\bar{s}\bar{c}]$ tetraquarks
• On the Nature of X(4260)
• Threshold corrections of ${\chi }_{\mathrm{c}}(2P)$ and ${\chi }_{\mathrm{b}}(3P)$ states and $J/\psi \rho$ and $J/\psi \omega$ transitions of the $X(3872)$ in a coupled-channel model
• Strong decays of the $XYZ$ states
• Quark structure of the ${\chi }_{\mathrm{c}}(3P)$ and $X(4274)$ resonances and their strong and radiative decays
• Charmonium spectrum with a Dirac potential model in the momentum space
• Threshold effects in heavy quarkonium spectroscopy