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Analysis of the $Y(4220)$ and $Y(4390)$ as molecular states with QCD sum rules

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arxiv 1611.03250 v4 pith:4TTKCBAO submitted 2016-11-10 hep-ph

classification hep-ph
keywords molecularrulesstatesanalysisarticleassignassigningcalculations
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

In this article, we assign the $Y(4390)$ and $Y(4220)$ to be the vector molecular states $D\bar{D}_1(2420)$ and $D^*\bar{D}_0^*(2400)$, respectively, and study their masses and pole residues with the QCD sum rules in details. The present calculations only favor assigning the $Y(4390)$ to be the $D\bar{D}_1(1^{--})$ molecular state.

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  1. $D \bar D_1(2420)$ and $D^* \bar D^*(2400)$ molecular states: Probing their electromagnetic fingerprints

    hep-ph 2025-04 conditional novelty 6.0 of 10

    For the D \bar D_1 and D* \bar D* molecular states, the computed magnetic moments are -1.41 and 3.85 nuclear magnetons, with negative quadrupole moments, both dominated by light-quark contributions.

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