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Heavy mesons in the Quark Model

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arxiv 1809.06985 v1 pith:AO325REV submitted 2018-09-19 hep-ph

Heavy mesons in the Quark Model

classification hep-ph
keywords heavymodelquarkmesonsstatescomponentsdiscoverysince
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Since the discovery of the $J/\psi$, the quark model was very successful in describing the spectrum and properties of heavy mesons including only $q\bar q$ components. However since 2003, with the discovery of the $X(3872)$, many states that can not be accommodated on the naive quark model have been discovered, and they made unavoidable to include higher Fock components on the heavy meson states. We will give an overview of the success of the quark model for heavy mesons and point some of the states that are likely to be more complicated structures such as meson-meson molecules.

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