Hints for the existence of hexaquark states in the baryon-antibaryon sector

Abstract

The discovery of some baryon-antibaryon resonances has led us to consider 3q~3\bar{q} systems as possible candidates. We predict their spectrum in the framework of a constituent model, where the chromo-magnetic interaction plays the main role. The relevant parameters are fixed by the present knowledge on tetraquarks. The emerging scenario complies well with experiment. Besides the description of the baryon-antibaryon resonances, we find evidence for new tetraquark states, namely the a0(Y) in the hidden strangeness sector and, in the cs\bar{c}\bar{s} sector, the Y(4140) and the X(4350). A detailed account of the spectra and the decay channels is provided for future comparisons with data.

17 pages

References in corpus (17)

• Exotica
• Observation of Two Resonant Structures in e+e- to pi+ pi- psi(2S) via Initial State Radiation at Belle
• Evidence for a Narrow Near-Threshold Structure in the $J/\psi \varphi$ Mass Spectrum in $B^{+}\to J/\psi \varphi K^{+}$ Decays
• Observation of a near-threshold enhancement in the e+e- -->Lambda_c+Lambda_c- cross section using initial-state radiation
• A Theory of Scalar Mesons
• Observation of a resonance X(1835) in J/ψ--> γπ^+ π^- η^{\prime}
• Observation of the bottomonium ground state in the decay Upsilon(3S) -> gamma eta_b
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• Observation of Y(2175) in $J/\psi \to \eta \varphi f_0(980)$
• Evidence that the Y(4660) is a f_0(980)psi' bound state
• Note on a sigma model connection with instanton dynamics
• High-statistics study of ${\boldmath ηπ^0}$ production in two-photon collisions
• Study of the a_0(980) meson via the radiative decay phi->eta pi^0 gamma with the KLOE detector
• Chromomagnetism, flavour symmetry breaking and S-wave tetraquarks
• Four-Quark Mesons in Non-leptonic B Decays--Could They Resolve Some Old Puzzles?
• Study of decay mechanisms in B- -> Lambda_c+ pbar pi- decay and observation of low mass structure in the (Lambda_c+ pbar) system
• Spectroscopy of ${\mathrm{q}}^3{\bar{\mathrm{q}}}^3$-States in Quark Model and Baryon-Antibaryon Enhancements

Cited by in corpus (21)

• The hidden-charm pentaquark and tetraquark states
• Multiquark Resonances
• Pentaquark and Tetraquark states
• A survey of heavy-heavy hadronic molecules
• Coupled-channel approach to $T_{cc}^{+}$ including three-body effects
• Hidden charm tetraquark states in a diquark model
• A possible partner state of the $Y(2175)$
• Baryonia and near-threshold enhancements
• $S$- and $P$-wave fully-strange tetraquark states from QCD sum rules
• The $ss\bar{s}\bar{s}$ tetraquark states and the newly observed structure $X(2239)$ by BESIII Collaboration
• Study of $J/\psi \to \omega p\bar{p}$ at BESIII
• Is the $Y(2175)$ a Strangeonium Hybrid Meson?
• Analysis of the Y(4274) with QCD sum rules
• Theory of hadron decay into baryon-antibaryon final state
• Observation of $\psi (3686)\to p\bar{p}\varphi$
• Looking for bound states and resonances in the ${\eta }^{\prime }K\bar{K}$ system
• b decays: a factory for hidden charm multiquark states
• Theory of time-like baryon form factors near thresholds
• $\varphi (2170)$ decaying to $\varphi \pi \pi$ and $\varphi K\bar{K}$
• Observation of ${\chi }_{cJ}(J=0,1,2)\to p\bar{p}\eta \eta$
• Phenomenological mass model for exotic hadrons and predictions for masses of non-strange dibaryons as hexaquarks