4.7 Article

Excited heavy tetraquarks with hidden charm

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EUROPEAN PHYSICAL JOURNAL C
卷 58, 期 3, 页码 399-405

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SPRINGER
DOI: 10.1140/epjc/s10052-008-0754-8

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  1. Russian Science Support Foundation
  2. Russian Foundation for Basic Research (RFBR) [08-02-00582]

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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.

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