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Tetraquark candidates in the LHCb's di-$J/\psi$ mass spectrum

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arxiv 2006.13028 v1 pith:PRKRI7PK submitted 2020-06-23 hep-ph

Zhi-Gang Wang This is my paper · ORCID
classification hep-ph
keywords excitedradialstatetetraquarkaxialvectormassmassesscalar
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

In this article, we study the first radial excited states of the scalar, axialvector, vector and tensor diquark-antidiquark type $cc\bar{c}\bar{c}$ tetraquark states with the QCD sum rules and obtain the masses and pole residues, then we use the Regge trajectory to obtain the masses of the second radial excited states. The predicted masses support assigning the broad structure from 6.2 to 6.8 GeV in the di-$J/\psi$ mass spectrum to be the first radial excited state of the scalar, axialvector, vector or tensor $cc\bar{c}\bar{c}$ tetraquark state, and assigning the narrow structure at about 6.9 GeV in the di-$J/\psi$ mass spectrum to be the second radial excited state of the scalar or axialvector $cc\bar{c}\bar{c}$ tetraquark state.

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Forward citations

Cited by 5 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. Next-to-leading order QCD corrections to electromagnetic production and decay of fully charm tetraquarks

    hep-ph 2025-12 conditional novelty 6.0 of 10

    The first NLO QCD corrections to fully charm tetraquark → γγ decay are given, with photon-fusion production cross sections predicted.

  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.

  5. A novel configuration of gluonic tetraquark state

    hep-ph 2024-11 conditional novelty 5.0 of 10

    The predicted masses of the octet-octet-octet tetracharm hybrid states, 6.98 GeV (0++) and 7.26 GeV (0-+), overlap the observed X(6900) and X(7200).

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