Hunting for exotic doubly hidden-charm/bottom tetraquark states

Abstract

We develop a moment QCD sum rule method augmented by fundamental inequalities to study the existence of exotic doubly hidden-charm/bottom tetraquark states made of four heavy quarks. Using the compact diquark-antidiquark configuration, we calculate the mass spectra of these tetraquark states. There are 18 hidden-charm $cc\bar{c}\bar{c}$ tetraquark currents with $J^{PC}=0^{++}$, $0^{-+}$, $0^{--}$, $1^{++}$, $1^{+-}$, $1^{-+}$, $1^{--}$, and $2^{++}$. We use them to perform QCD sum rule analyses, and the obtained masses are all higher than the spontaneous dissociation thresholds of two charmonium mesons, which are thus their dominant decay modes. The masses of the corresponding hidden-bottom $bb\bar{b}\bar{b}$ tetraquarks are all below or very close to the thresholds of the ${\rm Y}(1S){\rm Y}(1S)$ and ${\eta }_b(1S){\eta }_b(1S)$, except one current of $J^{PC}=0^{++}$. Hence, we suggest to search for the doubly hidden-charm states in the $J/\psi J/\psi$ and ${\eta }_c(1S){\eta }_c(1S)$ channels.

5 pages, 3 figures and 2 tables. published in PLB

References in corpus (7)

• Big-Bang Nucleosynthesis
• The Vector and Axial-Vector Charmonium-like States
• Heavy-flavored tetraquark states with the $QQ\bar{Q}\bar{Q}$ configuration
• Exotic $QQ\bar{q}\bar{q}$, $QQ\bar{q}\bar{s}$ and $QQ\bar{s}\bar{s}$ states
• Search for structure in the $B_s^0{\pi }^{\pm }$ invariant mass spectrum
• Possible $J^{PC}=0^{--}$ Charmonium-like State
• Why static bound-state calculations of tetraquarks should be met with scepticism

Cited by in corpus (118)

• Pentaquark and Tetraquark states
• An updated review of the new hadron states
• Observation of structure in the $J/\psi$-pair mass spectrum
• $QQ\bar{Q}\bar{Q}$ states: masses, production, and decays
• A non-relativistic model for the $[cc][\bar{c}\bar{c}]$ tetraquark
• Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
• Heavy-flavored tetraquark states with the $QQ\bar{Q}\bar{Q}$ configuration
• Spectrum of fully-heavy tetraquarks from a diquark+antidiquark perspective
• Tetra- and penta-quark structures in the constituent quark model
• Masses of fully heavy tetraquarks $QQ\bar{Q}\bar{Q}$ in an extended relativized quark model
• All-heavy tetraquarks
• New structures in the J/$\psi$J/$\psi$ mass spectrum in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• A $bb\bar{b}\bar{b}$ di-bottomonium at the LHC?
• Heavy tetraquarks in the relativistic quark model
• Spectrum of the fully-heavy tetraquark state $QQ{\bar{Q}}^{\prime }{\bar{Q}}^{\prime }$
• Full-heavy tetraquarks in constituent quark models
• The Search for Beauty-fully Bound Tetraquarks Using Lattice Non-Relativistic QCD
• The Simple Spectrum of $c\bar{c}c\bar{c}$ States in the Dynamical Diquark Model
• Doubly-hidden scalar heavy molecules and tetraquarks states from QCD at NLO
• Doubly-heavy tetraquarks
• Beauty-full Tetraquarks
• Diffusion Monte Carlo calculations of fully-heavy (multiquark) bound states
• Fully-heavy tetraquark spectra and production at hadron colliders
• A study of $cc\bar{c}\bar{c}$ tetraquark decays in 4 muons and in $D^{(\ast )}{\bar{D}}^{(\ast )}$ at LHC
• Towards the understanding of fully-heavy tetraquark states from various models
• Systematics of fully heavy tetraquarks
• Masses of the $QQ\bar{Q}\bar{Q}$ tetraquarks in the relativistic diquark--antidiquark picture
• Strong decays of fully-charm tetraquarks into di-charmonia
• $X_0(2900)$ and $X_1(2900)$: hadronic molecules or compact tetraquarks
• Scalar Fully-heavy Tetraquark States $Q{Q}^{\prime }\bar{Q}\overline{Q^{\prime }}$ in QCD Sum Rules
• Fully-heavy tetraquarks in strongly interacting medium
• Gluonic Tetracharm Configuration of $X(6900)$
• Spectroscopy of the hidden-charm $[qc][\bar{q}\bar{c}]$ and $[sc][\bar{s}\bar{c}]$ tetraquarks
• Search for $bb\bar{b}\bar{b}$ tetraquark decays in 4 muons, $B^{+}{B}^{-}$, $B^0{\bar{B}}^0$ and $B_s^0{\bar{B}}_s^0$ channels at LHC
• Nonrelativistic Treatment of Fully-Heavy Tetraquarks as Diquark-Antidiquark States
• $0^{+}$ fully-charmed tetraquark states
• Measurement of the ${\rm Y}$(1S) pair production cross section and search for resonances decaying to ${\rm Y}$(1S)${\mu }^{+}{\mu }^{-}$ in proton-proton collisions at $\sqrt{s}=$ 13 TeV
• Search for beautiful tetraquarks in the ${\rm Y}(1S)\mu \mu$ invariant-mass spectrum
• Tetraquark candidates in the LHCb's di-$J/\psi$ mass spectrum
• Nature of $X(6900)$ and its production mechanism at LHCb
• Fully-heavy tetraquark spectroscopy in the relativistic quark model
• Exotic resonances of fully-heavy tetraquarks in a lattice-QCD insipired quark model
• The $S$- and $P$-wave fully charmed tetraquark states and their radial excitations
• Higher mass spectra of the fully-charmed and fully-bottom tetraquarks
• Hunting for states in the recent LHCb di-$J/\psi$ invariant mass spectrum
• Mass spectra and wave functions of $T_{QQ\bar{Q}\bar{Q}}$ tetraquarks
• Producing fully-charm structures in the $J/\psi$-pair invariant mass spectrum
• The possible tetraquark states $cc\bar{c}\bar{c}$ observed by the LHCb experiment
• Deciphering the recently discovered tetraquark candidates around 6.9 GeV
• Higher fully-charmed tetraquarks: Radial excitations and P-wave states
• Fully heavy pentaquarks
• Exploring fully heavy scalar tetraquarks $QQ\overline{Q}\overline{Q}$
• Spectroscopy behavior of fully heavy tetraquarks
• Benchmark calculations of fully heavy compact and molecular tetraquark states
• Analysis of hidden-bottom bb\bar{b}\bar{b} states
• Discovery potential for the LHCb fully-charm tetraquark $X(6900)$ state via $\bar{p}p$ annihilation reaction
• Spectrum of the S-wave fully-heavy tetraquark states
• Analysis of the $X(6600)$, $X(6900)$, $X(7300)$ and related tetraquark states with the QCD sum rules
• $QQ\bar{s}\bar{s}$ tetraquarks in the chiral quark model
• All-charm tetraquark in front form dynamics
• Revisit the tetraquark candidates in the $J/\psi J/\psi$ mass spectrum
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• The lineshape of the compact fully heavy tetraquark
• Spectroscopy of all charm tetraquark states
• Spectrum of $cc\bar{b}\bar{b}$, $bc\bar{c}\bar{c}$, and $bc\bar{b}\bar{b}$ Tetraquark States in the Dynamical Diquark Model
• Going in quest of potential tetraquark interpretations for the newly observed $T_{\psi \psi }$ states in light of the diquark-antidiquark scenarios
• Mass spectra and decays of open-heavy tetraquark states
• Hunting for tetraquarks in ultra-pheripheral heavy ion collisions
• Fully-heavy tetraquarks: $bb\bar{c}\bar{c}$ and $bc\bar{b}\bar{c}$
• Masses of fully-heavy tetraquark states from a four-quark static potential model
• Exotic fully-heavy $Q\bar{Q}Q\bar{Q}$ tetraquark states in $8_{[Q\bar{Q}]}\otimes 8_{[Q\bar{Q}]}$ color configuration
• Study of $X(6900)$ with unitarized coupled channel scattering amplitudes
• NLO results with operator mixing for fully heavy tetraquarks in QCD sum rules
• Fully-charm and -bottom pentaquarks in a Lattice-QCD inspired quark model
• Fully-heavy tetraquark states and their evidences in the LHC observations
• X(6200) as a compact tetraquark in the QCD string model
• Decay behaviors of the fully-bottom and fully-charm tetraquark states
• Triply heavy $QQ\bar{Q}\bar{q}$ tetraquark states
• Investigation of the stability for fully-heavy $bc\bar{b}\bar{c}$ tetraquark states
• Fully Heavy Tetraquark $bb\bar{c}\bar{c}$: Lifetimes and Weak Decays
• Exotic Hadrons at LHCb
• Doubly hidden-charm/bottom $QQ\bar{Q}\bar{Q}$ tetraquark states
• Pair structure of heavy tetraquark systems
• Prospects for quarkonium studies at the high-luminosity LHC
• Axial Vector $cc$ and $bb$ Diquark Masses from QCD Laplace Sum-Rules
• The bosonic algebraic approach applied to the $[QQ][\bar{Q}\bar{Q}]$ tetraquarks
• Two- and three-gluon glueballs of $C=+$
• Pseudoscalar charmonium pair interactions via the Pomeron exchange mechanism
• Things that go bump in the night: From $J/\psi \varphi$ to other mass spectrum
• Mass-Spectroscopy of hidden charm and hidden strange tetraquarks in diquark-antidiquark approach
• The two-body strong decays of the fully-charm tetraquark states
• Investigation of Mass and Decay Characteristics of the All-light Tetraquark
• Mass spectra of hidden heavy-flavor tetraquarks with two and four heavy quarks
• Fully heavy tetraquark resonant states with different flavors
• Mass spectra for the $cc\bar{b}\bar{b}$/$bb\bar{c}\bar{c}$ tetraquark states
• Would a Deeply Bound $b\bar{b}b\bar{b}$ Tetraquark Meson be Observed at the LHC?
• Hadronic molecules with four charm or beauty quarks
• P-wave fully charm and fully bottom tetraquark states
• Mass Spectra of $qq\bar{q}\bar{q}$, $ss\bar{s}\bar{s}$ and $qq\bar{s}\bar{s}$ Tetraquarks using Regge Phenomenology
• Searching for fully-heavy tetraquark states in QCD moment sum rules
• Constraining the $DD{D}^{\ast }$ three-body bound state via the $Z_c(3900)$ pole
• Fully charmed P-wave tetraquark resonant states in the quark model
• Spectroscopy of $cc\bar{c}\bar{c}$ and $ss\bar{c}\bar{c}$ Tetraquarks within the Framework of Regge Phenomenology
• Spectroscopic study of $ss\bar{b}\bar{b}$ and $bb\bar{b}\bar{b}$ Tetraquarks using Regge phenomenology
• Prediction of charmed-bottom pentaquarks in quark model
• Investigation of Mass and Decay Characteristics of the Light-Strange Tetraquark
• Investigating full-heavy tetraquarks composed of $cc\bar{c}\bar{b}$ and $bb\bar{b}\bar{c}$
• Strong decays of the fully-charm tetraquark states with explicit P-waves via the QCD sum rules
• Production cross sections of tetraquark states in elementary hadronic collisions
• Investigating the internal structure of $X(6900)$ in the $2J/\psi$ decay channel
• Fully heavy tetraquark states with a diquark-antidiquark configuration
• Four-Charm-Quark Matter from the CMS Collaboration as a Witness of the Development of High-Precision Hadron Spectroscopy
• ${\eta }_c{\eta }_c$ and $J/\psi J/\psi$ scatterings from lattice QCD
• Rotation and vibration in tetraquarks
• Hunting for possible Higgs-like boson beyond the Standard Model
• Possible bound states in the triple-${\eta }_c$ and triple-$J/\psi$ systems
• Mass-Spectroscopy of [$bb][\bar{b}\bar{b}$] and [$bq][\bar{b}\bar{q}$] tetraquark states in a diquark-antidiquark formalism
• Study of the ${\Omega }_{ccc}{\Omega }_{ccc}$ and ${\Omega }_{bbb}{\Omega }_{bbb}$ dibaryons in QCD Sum Rules