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$P_c$ pentaquarks with chiral tensor and quark dynamics

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arxiv 1907.04684 v3 pith:EA4KXZJW submitted 2019-07-10 hep-ph

Yasuhiro Yamaguchi , Hugo Garcia-Tecocoatzi , Alessandro Giachino , Atsushi Hosaka , Elena Santopinto , Sachiko Takeuchi , Makoto Takizawa This is my paper · ORCID
classification hep-ph
keywords decayquarksigmawidthschiraldynamicsmassespentaquarks
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abstract

We investigate the hidden-charm pentaquarks as superpositions of $\Lambda_c \bar{D}^{(*)}$ and $\Sigma_c^{(*)} \bar{D}^{(*)}$ (isospin $I = 1/2$) meson-baryon channels coupled to a $uudc\bar{c}$ compact core by employing an interaction satisfying the heavy quark and chiral symmetries. Our model can consistently explain the masses and decay widths of $P_c^+(4312)$, $P_c^+(4440)$ and $P_c^+(4457)$ with the dominant components of $\Sigma_c \bar D$ and $\Sigma_c \bar D^\ast$ with spin parity assignments $J^P = 1/2^{-}, 3/2^{-}$ and $1/2^{-}$, respectively. We analyze basic properties of the $P_c$'s such as masses and decay widths, and find that the mass ordering is dominantly determined by the quark dynamics while the decay widths by the tensor force of the one-pion exchange.

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Cited by 4 Pith papers

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

  1. Molecular Interpretation of the $P_c(4440)$ and $P_c(4457)$ States

    hep-ph 2019-08 conditional novelty 7.0 of 10

    The paper predicts Pc(4440) has J^P = 3/2- and Pc(4457) has J^P = 1/2+ in a pion-exchange coupled-channel model without short-range terms.

  2. Strange pentaquarks with a hidden heavy quark-antiquark pair

    hep-ph 2025-07 conditional novelty 5.0 of 10

    A quark cluster model predicts strange pentaquark resonances with hidden charm near 4500 MeV and more pronounced structures in hidden-bottom systems.

  3. Faddeev equations for the $J/\psi\,NN$ and $\phi\,NN$ three-body systems in momentum space

    hep-ph 2026-08 conditional novelty 4.0 of 10

    A momentum-space Faddeev calculation with Malfliet-Tjon and HAL QCD potentials predicts phi-nucleon-nucleon bound states and no J/psi-nucleon-nucleon bound state.

  4. Strong decays of the latest LHCb pentaquark candidates in hadronic molecule pictures

    hep-ph 2019-08 conditional novelty 4.0 of 10

    Treating Pc(4312), Pc(4440) and Pc(4457) as S-wave hadronic molecules, this paper computes decay widths and argues that spins 1/2^-, 1/2^- and 3/2^- respectively fit the measured widths.

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