Tetraquark spectroscopy

Abstract

A complete classification of $qq\bar{q}\bar{q}$ tetraquark states in terms of the spin-flavour, colour and spatial degrees of freedom has been constructed. The permutational symmetry properties of both the spin-flavour and orbital parts of the $qq$ and $\bar{q}\bar{q}$ subsystems are discussed. This complete classification is general and model independent and it is useful both for model builders and experimentalists. The total wave functions are also explicitly constructed in the hypothesis of ideal mixing; this basis for tetraquark states will enable the eigenvalue problem to be solved for a definite dynamical model. An evaluation of the tetraquark spectrum is obtained from the Iachello mass formula for normal mesons, here generalized to tetraquark systems. This mass formula is a generalization of the Gell-Mann Okubo mass formula, whose coefficients have been upgraded by a study of the latest PDG data. The ground state tetraquark nonet is identified with $f_0(600),\kappa (800),f_0(980),a_0(980)$. The mass splittings predicted by the Iachello mass formula are in agreement with the KLOE, Fermilab E791 and BES experimental data.

Accepted for pubblication in Phys.Rev. C, 29 pages, 3 figures, Diquark-antidiquark limit added, references added, figures changed

References in corpus (24)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Instantons in QCD
• QCD at Finite Baryon Density: Nucleon Droplets and Color Superconductivity
• Exotica
• Mass and width of the lowest resonance in QCD
• A new look at scalar mesons
• Scalar mesons above and below 1 GeV
• Experimental evidence for a light and broad scalar resonance in $D^{+}\to {\pi }^{-}{\pi }^{+}{\pi }^{+}$ decay
• UNDERSTANDING THE SCALAR MESON $q\bar{q}$ NONET
• On the nature of light scalar mesons from their large $N_c$ behavior
• Dalitz Plot Analysis of the Decay D^+ --> K^- pi^+ pi^+ and Indication of a Low-Mass Scalar K pi Resonance
• Putative Light Scalar Nonet
• Insight into the Scalar Mesons from a Lattice Calculation
• Study of the Decay phi --> pi0 pi0 gamma with the KLOE Detector
• Study of the Decay phi --> eta pi0 gamma with the KLOE detector
• Evidence for kappa Meson Production in J/psi -> bar{K}^*(892)^0K^+pi^- Process
• Diquark Masses from Lattice QCD
• Aspects of the confinement mechanism in Coulomb-gauge QCD
• Do Quarks Really Form Diquark Clusters in the Nucleon?
• Instantons and Scalar Multiquark States: From Small to Large N_c
• Is there diquark clustering in the nucleon?
• Sigma, Kappa and fo(980) in E791 and BES II data
• Instanton-Induced Correlations in Hadrons
• BCS Diquark Condensation in the 3+1d Lattice NJL Model

Cited by in corpus (37)

• Multiquark Resonances
• Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
• Spectrum of fully-heavy tetraquarks from a diquark+antidiquark perspective
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• Higher mass bottomonia
• Unquenched quark model for baryons: magnetic moments, spins and orbital angular momenta
• Hidden-charm and bottom tetra- and pentaquarks with strangeness in the hadro-quarkonium and compact tetraquark models
• Interpreting $Z_c(3900)$ and $Z_c(4025)/Z_c(4020)$ as charged tetraquark states
• The light scalar mesons as tetraquarks
• Spectroscopy of the hidden-charm $[qc][\bar{q}\bar{c}]$ and $[sc][\bar{s}\bar{c}]$ tetraquarks
• Measuring K${}_{\mathrm{S}}^0$K${}^{\pm }$ interactions using Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Threshold corrections of ${\chi }_{\mathrm{c}}(2P)$ and ${\chi }_{\mathrm{b}}(3P)$ states and $J/\psi \rho$ and $J/\psi \omega$ transitions of the $X(3872)$ in a coupled-channel model
• Revising the $f_1(1420)$ resonance
• Iterative method to compute the Fermat points and Fermat distances of multiquarks
• Meson and glueball spectra with the relativistic flux tube model
• Measuring K${}_{\mathrm{S}}^0$K${}^{\pm }$ interactions using pp collisions at $\sqrt{s}=7$ TeV
• Light 1-+ exotics: molecular resonances
• ${\eta }_{\mathrm{c}}$- and $J/\psi$-isoscalar meson bound states in the hadro-charmonium picture
• Light scalar tetraquarks from a holographic perspective
• Quark structure of the ${\chi }_{\mathrm{c}}(3P)$ and $X(4274)$ resonances and their strong and radiative decays
• Further signatures to support the tetraquark mixing framework for the two light-meson nonets
• Investigation of Mass and Decay Characteristics of the All-light Tetraquark
• Testing the tetraquark mixing framework from QCD sum rules for $a_0(980)$
• QCD quark cyclobutadiene and light tetraquark spectrum
• Investigating the composition of the K${}_0^{\ast }(700)$ state with ${\pi }^{\pm }$K${}_{\mathrm{S}}^0$ correlations at the LHC
• Tetraquark Masses by using extension of Gursey-Radicati Mass Formula
• On Some properties of Di-hadronic states
• SU(3) analysis of fully-light tetraquarks in heavy meson weak decays
• Systematic study of pentaquark states: $qqq-q\bar{q}$ configuration
• Investigation of Mass and Decay Characteristics of the Light-Strange Tetraquark
• Heavy tetraquark confining potential in Coulomb gauge QCD
• Threshold Effects in Heavy Quarkonium Spectroscopy and Decays
• Spectroscopy of higher bottomonia
• Strange and nonstrange baryon spectra in the interacting quark-diquark model
• K${}_{\mathrm{S}}^0$K${}_{\mathrm{S}}^0$ and K${}_{\mathrm{S}}^0$K${}^{\pm }$ femtoscopy in pp collisions at $\sqrt{s}=$ 5.02 and 13 TeV
• X(1870) and ${\eta }_2(1870)$: Which can be assigned as a hybrid state?
• Threshold effects in heavy quarkonium spectroscopy