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X(3872) revisited: the roles of OPEP and the quark degrees of freedom

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arxiv 2405.16794 v1 pith:RN4PJ4PO submitted 2024-05-27 hep-ph

Sachiko Takeuchi , Yasuhiro Yamaguchi , Atsushi Hosaka , Makoto Takizawa This is my paper · ORCID
classification hep-ph
keywords couplingopepthresholdaboveanalysisappearattractionconsists
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abstract

The $X(3872)$ is investigated by employing the quark-hadron hybrid model, that consists of the $c\bar c$ core, $D^{(*)}\bar D{}^*$, $J/\psi\omega$, and $J/\psi\rho$ two-meson states. Due to the attraction from the $c\bar c$-$D\bar D{}^*$ coupling and from the OPEP tensor coupling, a very thin peak can appear at the $D^{0}\bar D{}^{*0}$ threshold. The energy of the corresponding pole of the scattering matrix is $E=(+0.06-0.14i)$ MeV, which is on the physical sheet and above the threshold, the same as the one of the poles from the LHCb data analysis.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Effect of a repulsive three-body interaction on the $DD^{(*)}K$ molecule

    nucl-th 2025-02 conditional novelty 5.0 of 10

    Repulsive three-body interactions gradually expand DD(∗)K molecules and eventually dissociate them into a D(∗)K bound pair plus a distant D meson.

  2. Radiative decay of $\chi_{c1}$ states in effective Lagrangian approach

    hep-ph 2025-06 conditional novelty 4.0 of 10

    A triangle-loop effective Lagrangian model predicts chi_c1(3872) radiative branching fractions tens of times above LHCb measurements, supporting a non-charmonium interpretation.

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