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Study of charmonium-like and fully-charm tetraquark spectroscopy

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arxiv 2012.15554 v2 pith:Y42VI3SC submitted 2020-12-31 hep-ph

Zheng Zhao , Kai Xu , Attaphon Kaewsnod , Xuyang Liu , Ayut Limphirat , Yupeng Yan This is my paper · ORCID
classification hep-ph
keywords tetraquarkfully-charmstatesexcitedmassesmodelobservedquark
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abstract

The masses of tetraquark states of all $qc\bar q \bar c$ and $cc\bar c \bar c$ quark configurations are evaluated in a constituent quark model, where the Cornell-like potential and one-gluon exchange spin-spin coupling are employed. All model parameters are predetermined by comparing the theoretical and experimental masses of light, charmed and bottom mesons. The theoretical predictions of the charmoniumlike tetraquarks are compared with the observed $XYZ$ states, and one tentative assignment is suggested. The work suggests that the $X(6900)$ observed by LHCb is likely to be the first radial excited fully-charm tetraquark state with $J^{PC} = 1^{+-}$ in the $\bar 3_c \otimes 3_c$ configuration, and the ground and second radial excited states of fully-charm tetraquark are around $6494$ and $7253$ MeV respectively.

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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. Light quark fragmentation into S-wave fully charmed tetraquark

    hep-ph 2024-11 conditional novelty 7.0 of 10

    Light quark fragmentation into S-wave fully-charmed tetraquarks is computed at leading order in NRQCD, giving production rates between the gluon and charm channels at the LHC and EIC.

  2. Fully charmed P-wave tetraquark resonant states in the quark model

    hep-ph 2024-11 conditional novelty 6.0 of 10

    A quark-model calculation predicts compact fully charmed P-wave tetraquark resonances near 7.0 to 7.2 GeV, including exotic J^PC = 0^-- and 1^-+ states, and finds no narrow tetraquark candidates below 7 GeV for X(6400...

  3. Lattice calculation of the $\eta_c\eta_c$ and $J/\psi J/\psi$ s-wave scattering length

    hep-lat 2024-11 conditional novelty 6.0 of 10

    A continuum-extrapolated lattice calculation gives a^{0+}_{eta_c eta_c} = -0.104(09) fm and a^{2+}_{J/psi J/psi} = -0.165(16) fm, indicating repulsive interactions.

  4. Symmetry Analysis of Compact Tetraquark States and Implications for the Fully Charmed Candidates $X(6600)$, $X(6900)$, and $X(7100)$

    hep-ph 2026-07 unverdicted novelty 5.0 of 10

    Symmetry analysis of compact tetraquarks shows low-energy states favor J^P=2+ and places X(6600), X(6900), X(7100) among the lower levels of the fully charmed spectrum.

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