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Spectrum of fully-heavy tetraquarks from a diquark+antidiquark perspective

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arxiv 1911.00960 v2 pith:IEK5S365 submitted 2019-11-03 hep-ph hep-exhep-latnucl-exnucl-th

M. A. Bedolla , J. Ferretti , C. D. Roberts , E. Santopinto This is my paper
classification hep-phhep-exhep-latnucl-exnucl-th
keywords diquarkfully-heavymodelcomputemassessystemstetraquarksantidiquark
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Using a relativized diquark model Hamiltonian, we calculate the masses of $J^{PC}=0^{++}$ ground-state tetraquarks in the following systems: $b s \bar b \bar s$, $bb \bar n \bar n$ ($n=u, d$), $bb \bar s \bar s$, $cc\bar c \bar c$, $b b \bar b \bar b$, $b c\bar b \bar c$ and $b b \bar c \bar c$. We also compute extensive spectra for the fully-heavy quark flavour combinations. Finally, as a test of the diquark model approach, we compute the masses of fully-heavy baryons in the diquark model. Our results may be compared soon to the forthcoming experimental data for fully-heavy three-quark systems.

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Forward citations

Cited by 7 Pith papers

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

  1. 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.

  2. Observation of structures in the $J/\psi +\psi(2S)$ mass spectrum with the ATLAS detector

    hep-ex 2025-09 conditional novelty 6.0 of 10

    A structure near 6.9 GeV appears in the J/psi+psi(2S) mass spectrum at 8.9 sigma, consistent with the X(6900) tetraquark.

  3. Symmetry Analysis of Compact Tetraquark States and Implications for the Level Ordering of 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.

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

    hep-ph 2026-07 conditional novelty 5.0 of 10

    Counting symmetry-allowed states up to orbital angular momentum L=3 predicts low-lying compact tetraquarks prefer J^P=2^+, matching the observed 2^{++} fully charmed X states.

  5. Fully-heavy multiquarks in neural-network quantum states

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    Neural-network quantum states are used to compute spectra of fully-heavy multiquarks in a non-relativistic quark model, claiming to overcome dimensionality issues with superior accuracy over prior approximations.

  6. Enhanced evidence of $X(7200)$ and improved measurements of $X(6900)$ parameters from a combined LHCb-ATLAS-CMS analysis

    hep-ex 2026-04 conditional novelty 5.0 of 10

    A combined fit to LHCb, ATLAS, and CMS di-J/ψ data finds >12σ evidence for X(6900) and 3.7–6.6σ evidence for X(7200), with interference effects playing a critical role.

  7. Enhanced evidence of $X(7200)$ and improved measurements of $X(6900)$ parameters from a combined LHCb-ATLAS-CMS analysis

    hep-ex 2026-04 unverdicted novelty 5.0 of 10

    Simultaneous fits to LHCb-ATLAS-CMS data raise X(7200) evidence to 3.7–6.6σ (best 6.6σ) while confirming X(6900) at >12σ with improved mass and width precision.

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