Exotic Charmonium and Bottomonium-like Resonances

Details Exotic Charmonium and Bottomonium-like Resonances Exotic Charmonium and Bottomonium-like Resonances

2011-08-04

arxiv.org/abs/1108.1230v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure

Scientific paper

Many new states in the charmonium and bottomonium mass region were recently discovered by the BaBar, Belle and CDF Collaborations. We use the QCD Sum Rule approach to study the possible structure of some of these states. In particular we identify the recently observed bottomonium-like resonance $Z_b^+(10610)$ with the first excitation of the tetraquark $X_b(1^{++})$, the analogue of the X(3872) state in the charm sector.

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