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arxiv: 0810.2875 · v1 · submitted 2008-10-16 · ✦ hep-ph

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Charm spectroscopy beyond the constituent quark model

J. Segovia , D.R. Entem , F. Fern\'andez
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classification ✦ hep-ph
keywords charmconstituentmodelquarksectorstatesbeyondcharmonium
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We study the nature of the new charm and charmonium like states observed in the last few years, using a constituent quark model with an screened confinement potential. In the open charm sector we discuss different options for the $D_{sJ}(2860)$ including tetraquark configurations. In the hidden charm sector the new Y(4360) and Y(4660) are interpreted as $1^{--}$ states. The influence in the puzzling 3940 MeV region of multiquark configuration is discussed.

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  1. Does $\psi(4660)$ exist?

    hep-ph 2026-05 unverdicted novelty 4.0

    Fits using coupled channels and bare states show the psi(4660) as a conventional charmonium state above the Lambda_c pair threshold in both Belle and BESIII datasets.